Introduction-
One of the largest stock of livestock in the world is found in Pakistan. It is the fourth-largest milk producer in the world with more than 50 million cattle and buffalo bearing significant contribution to the rural and national economy. Nevertheless, in spite of this impressive size, pakistan dairy farm fan price in pakistan have a long time and very often neglected foe extreme heat.
When high humidity levels are added to the heat that is routinely present in regions such as Punjab and Sindh, where most dairy farming takes place, the result is a deadly environment in which milk producing animals operate. Cows and buffaloes do not have the ability to sweat as humans do. They use respiration and external cooling as a means of temperature regulation in their bodies. They experience heat stress in case the mercury rises.
Effects of heat stress on dairy animals are not discreet. The production of milk may reduce by 10-20 percent or more. Fertility rates decline. The feed consumption is decreased and the consumption of water is increased. In extreme cases, animals either grow lazy or stand long hours along water troughs, and even stop eating. In the case of an average Pakistani dairy farm fan price in pakistan, this directly translates to financial loss, less milk to sell, high costs to the veterinary and weak calves.
Why then is the solution? It can be solved through the introduction of proper ventilation and forced air circulation. Normal ceiling or pedestal fans that are available in homes or offices are not up to the task. What is needed by Pakistani dairy farms are dedicated, heavy-duty Dairy Fans to Pakistan-equipment that is specifically designed to withstand the harsh conditions of the dairy farms in Pakistan and to deliver powerful, consistent airflow to the dairy farm. These fans no longer are a luxury. They have become a must-have on any farm that would like to ensure the welfare of their animals and at the same time achieve maximum profitability.
This paper will discuss precisely the reasons why the conventional fans fail, what specifications to consider when acquiring a proper dairy fan, and then review 6 of the best heavy-duty options that can be used in Pakistani farms. Whether you have a small holding and your farm set up has twenty fans, or you have a commercial set up and have five hundred fans in your farm set up, the right fans to fit your dairy farm set up will transform your productivity.
The reasons as to why Standard Fans have failed in Pakistani Dairy Farm fan price in pakistan.
Pakistani dairy farm owners are commonly seen attempting to save money by using either residential ceiling fans, industrial wall fans available in local electrical stores or second-hand exhaust fans obtained at a factories. Paperwise, these fans circulate air. They are easily failed and are expensive in the long run. This knowledge of the reason why explains why Dairy Fans to Pakistan will have to be designed.
Voltage Swings: The electricity supply in Pakistan, especially the rural areas, is infamously unpredictable. Voltage may decrease to 180 V or may rise to 260 V in a few minutes. Even normal fan motors will not work in this range. They heat up, and burn out or even run at a slower pace which provides insufficient airflow when it is most demanded by animals.
Dust and Particulate Matter: Dairy farms produce tremendous amounts of dust, in the form of dry feed, bedding material (rice husks, wheat straw or sand), and dry manure. Normal fans introduce this dust to their motor housings and bearings. In few weeks, the fan gets loud, imbalanced or completely taken.
Corrosive Environment: Manure gives out the ammonia gas that is very corrosive to metals. This ammonia in closed or semi-enclosed sheds mixes with moisture to create a mild acid. The painted steel fans that are considered normal rust and pith in a few months. Blades rust, guards are broken, and electricity connections are lost.
Humidity and Washdowns: Washdowns have become a common practice among many progressive pakistan dairy farms as a measure to maintain hygiene. It leads to excessive moisture and direct spray of water. Low-IP (Ingress Protection) rating standard fans admit the water to windings of motor and cause short circuit and electrical risk.
Inadequate Airflow (CFM): one of the most common residential ceiling fan designs is the 48-inch model with a 5,000 to 7,000 cubic feet per minute (CFM) airflow. A dairy fan of the same diameter (heavy-duty) can move 15,000 to 22,000 CFM. This difference is no small one–it is the difference between air which hardly moves, and air which cools animals by convection.
Due to these problems, a number of farmers have experimented with low priced fans, only to see them fail within one or two summer seasons, and conclude that fans are not
effective. The truth is
that the wrong fans don’t work. Pakistan will need Proper Dairy Fans, and they will work safely and reliably over several years.
The main characteristics that should be observed in a Dairy Fan.
You can not just consider the size of the blades and their price when shopping Dairy Fans in Pakistan. The following are some of the features that will help distinguish between a real heavy-duty dairy fan and a short lived imitation. Knowing these features will also help you to make sense of the dairy farm fan price in pakistan range which can vary between PKR 25,000 to over PKR 400,000 depending on quality and origin.
- Motor Protection (IP Rating) Find at least IP55 rating. This implies that the motor is dust-proof, and has the capability to endure low-pressure water jets in any direction. Where wet conditions are required such as milking parlor, IP66 is even better. Fully sealed types of motors are much longer lasting in the farm conditions in Pakistan.
- Blade Material and Design The most efficient fans to use in the application of dairy farms are galvanized steel, stainless steel or fiberglass-reinforced plastic (FRP) blades. These materials are resistant to rust and corroding by ammonia and humidity. The design of the blades is also a consideration; aerodynamically designed blades transfer more air with less noise and uses less energy.
- Airflow Capacity (CFM) Find the size of your shed and the number of animals. A general guideline: every adult moderately heat stressed cow requires no less than 300 to 500 CFM of direct air movement. When the heat is severe (more than 40 o C) the amount is increased to 800 CFM per animal. One good dairy fan is in a position to serve 8 to 12 cows in an open shed.
- Energy Efficiency Dairy fans tend to operate 12-24 hours per day during summertime. A motor that is not efficient will increase the amount of rupees you pay monthly as electricity bills. Find fans that have high-efficiency motors (IE2 or IE3 rated) or EC (electronically commutated) motors, which consume up to 30 percent less energy than a typical AC motor.
- Safety Features Open-blade fans are hazardous with animals and employees. The dairy fans to be used in Pakistan must have a securely fitted metal guard with apertures that are not more than 0.5 inches. Also, thermal overload protection automatically switches off the motor in case of overheating to avoid fires and burn out of the motor.
- Voltage Tolerance Since Pakistan has a grid unstable environment, the most suitable Dairy Fans to use in Pakistan are those that can operate under 180 V to 260 V without a separate stabilizer per fan. Other high quality imported fans have wide-voltage or variable frequency drive (VFD) compatibility.
- Mounting Options You will require fans to be mounted in walls, ceiling trusses or portable stands. Make sure that the model of fan that you are going to use has the right mounting hardware to fit your type of shed. The most common type of wall-mounted fan used in sheds of dairy farms is used in Pakistan due to the open sides on many barns and the use of low-cost roofing that is not able to support heavy-weight ceiling fans.
- Repairability and Availability of Spare Parts This is one of the key factors that influence the price of dairy farm fans in pakistan value. The cheap imported fan that contains no spare parts in the country would turn into an expensive paper-weight when the motor capacitor fails or the blade breaks. Always safer options would be local brands or globally known brands having Pakistani distributors.
When you know these eight features then you can assess any dairy fan based on its actual merits and not merely on its price tag. Keep in mind: the most cost effective fan may not be the most cost effective in the long run. A five-year fan that will save you the production of your milk during every summer is not an expense, it is an investment.
6 Heavy-Duty Dairy Fans to Pakistan- Detailed Reviews.
Pakistani Dairy Market Overview.
To properly grasp why the Dairy Fans Pakistan are gaining momentum, we need to understand the framework of the pakistan dairy industry, as well as its challenges. Pakistan dairy is a world leader in the amount of raw milk with a production capacity of about 65 to 70 million tons of milk every year. Nonetheless, the yield per animal is strongly resistant to growth. An average dairy cow in Pakistan gives birth to 1,500 to 2,500 liters on average per lactation, versus 8,000 to 10,000 liters of milk per lactation, in developed dairy countries.
Why such a gap? The causes are many; they include; genetics, nutrition, veterinary care and of course, environmental stress. Heat is, perhaps, the most immediate and controllable element. An animal with high production and heat stress will decrease milk production in a much more drastic way than a animal with low production and heat stress. It implies that as Pakistani farmers strive to enhance their herds by applying some superior genetics, the cost of heat stress will be even more expensive.
The pakistan dairy landscape is changing. Still, traditional smallholdings of 5 to 10 animals are still prevalent but commercial farms of 100, 500 and even 1,000 are on a rapid rise near larger cities such as Lahore, Faisalabad, Multan, Karachi and Islamabad. These commercial operators know that by investing in infrastructure such as appropriate fans in dairy farm ventilation directly enhances their bottom line.
There are also government and non-governmental efforts towards modernization. Punjab Livestock and Dairy Development Board with other dairy associations have embarked on educating farmers on the heat abatement strategies. Nevertheless, most regions of Pakistan are still unaware of specially designed Dairy Fans. Most farmers are still relying solely on the use of natural ventilation (open-sided sheds) which is ineffective during still, humid days.
Barrier: The dairy farm fan price in pakistan has always been one of the hurdles. A single quality fan with price tag PKR 50,000 to 100,000 makes farmers hesitate. They make a comparison of it with a PKR 5,000 residential ceiling fan. What they do not tally is the worth of the lost production of milk in one heatwave alone. A 50 cow farm losing 3 liters per cow per day losing 20 days of empty milk cows the farm loses 3,000 liters of milk. At a lost revenue of PKR 360,000 at a lost rate of PKR 120 per liter that is, PKR 360,000 at a lost rate of PKR 120 per liter. The math is clear.
Pakistan Farms Top 6 Dairy Fans.
Now, having realized the importance of proper ventilation and the characteristics that constitute a good dairy fan, it is time to focus on particular products that Pakistani farmers can use. The six fans listed below are a sample of different prices, source and use. Others are high-end imported and others are locally produced or assembled, depending on the size of the holding, small to medium. Every fan has been chosen because it is capable of truly enduring the conditions and environment of Pakistani farms and provide the necessary airflow to reduce heat stress.
Fan One and Big Ass Fans Essentia and Isis Models.
Big Ass Fans is an American company, which is globally known regarding the use of high volume low speed or HVLS technology. In contrast to conventional fans which rotate with rapid speed and form narrow columns of air, the HVLS fans move extremely large quantities of air at a slow speed using huge blades. The Essentia model has diameters of between eight feet to twenty four feet and the smaller Isis model has a starting diameter of six feet. Since such fans are slow rotating fans, they are very quiet, and safe to animals.
One large HVLS fan can service an entire barn of three thousand to five thousand square feet, instead of dozens of smaller fans. The air pumped by it is mild but diffuse and sweeps over all the animals within the shed.These fans are regarded as the gold standard when it comes to large commercial pakistan dairy operations with high ceilings and open floor plans. Nevertheless, they are sold at a high price.
The prices of big ass fans dairy farm fan in pakistan vary between PKR 400,000 and PKR 150,000 with varying sizes and importation duties. They are most applicable to farms where long term durability is a requirement and have the electrical facilities to service a large motor. The primary disadvantage is that not all Pakistani sheds have the ceiling height required to install an HVLS fan in the most appropriate way and the initial cost is still prohibitive to small farmers.
Fan Two- Pakistan Made Heavy Duty Wall mount Fan by Local Manufacturers.
Fan Three J and D Manufacturing Disc Fans.
J and D Manufacturing is an American firm that deals with ventilation equipment of livestock houses. Their disc dairy fan are unique due to the unique blade design which is based on a solid disc as opposed to individual fan blades. The effect of this design is that a wide, uniform column of air with less turbulence is created. The motors are completely enclosed and have an IP55 or greater rating, thus being very resistant to dust and moisture.
J and D disc dairy fan come in fifty two inch and sixty inch dia, with airflow ratings of up to twenty one thousand CFM. The housing is made out of powder coated steel that can withstand regular wash downs and exposure to ammonia. They are especially suitable in the most humid parts of a dairy farm like the milking parlors, holding penalties and wash alleys where water is frequently required. Under such conditions, the smaller fans do not last long because of corrosion and short circuiting.
The J and D fans also have lower noise levels in comparison to the conventional propeller fans, which decreases the stress on animals during the milking process. The approximate price in pakistan of a single unit of dairy farm fan in J and D fans is PKR 80,000 to PKR 120,000. They are imported via specialised agricultural equipments dealers. These fans are a good investment to any progressive pakistan dairy fan having milking parlors and intending to ensure the comfort of animals during this critical milking period. Their primary shortcoming is stocking since not every general hardware store carries them, and they might need to be ordered ahead.
Fan Four- Vostermans Multifan Airstream Series.
Vostermans is a Dutch enterprise that has over 30 years of experience in the ventilation of agricultural facilities. Their Multifan Airstream series is regarded by many as one of the most efficient in terms of energy use on the market currently. The important innovation is the utilization of electronically commutated or EC motors that use as much as thirty percent less electricity than standard alternating current motors of the same size.
In the case of a farm that runs fans a total of eighteen hours a day during the summer, this energy conservation would simply translate into monthly bills that are reduced. The dairy fan blades are composed of fiberglass reinforced plastic that do not rust and very resistant to ammonia and cleaning chemicals. Blade sizes vary between thirty six inches to fifty inches and airflow is between twelve thousand and twenty thousand CFM.
Multifans are also fitted in tunnel ventilators and in this case the fans are placed at one end of a long barn to force the air to flow through the whole building. This produces an effect of wind chill which is very effective in cooling cows. In the case of pakistan dairy farms who have invested in a system that is enclosed or semi enclosed sheds, the Multifan series would be an excellent solution.
Vostermans Multifans dairy farm fan price in pakistan is between PKR 60, 000 and PKR 100,000. They are cheaper than Big Ass Fans but more costly than the local ones. Their primary strength is the blend of durability, energy efficiency, and a worldwide reputation.
Fan Five – Local Redesigned Cage Fan in Karachi and in Lahore Vendors.
Locally redesigned cage fans are at the cheapest end of the market. These consist of simple direct drive fans, with metal cages about the fans, but with adjustments made to fit on a wall or pole. In Karachi, Lahore and Faisalabad, these fans are assembled by the vendors using local motors and imported bearings.
Blade diameters will usually be thirty to forty two inches. The airflow is small, typically eight thousand to fourteen thousand CFM, however, the price is very low. The fan price of dairy farm fan in pakistan is between PKR 18,000 and PKR 30,000. To a small subsistence farm having ten to twenty animals and having very limited capital, these fans are not a bad thing. They are easily repaired at low costs and the parts can be found anywhere.
Nonetheless, the negatives are high. They are noisy, use more electricity per CFM than more well-designed fans, and are usually only one or two heavy seasons before the motors have exhausted their service, or the cages rust through. They also do not have safety features such as thermal overload protection and thus could potentially cause fire in dusty environments. These fans should rather be considered a short-term measure or as auxiliary fans to complement an existing whole ventilation system.
Fan Six -Schaefer Ventilation Galvanized Vane Axial Fans.
Another brand which is an established American brand and provides heavy duty vane axial fans is the brand of Schaefer Ventilation. Their fans have 100 percent enclosed motors, galvanized steel housings, and aerodynamically designed blades. The sizes are between a range of twenty four inches and forty eight inches with airflow of between eight thousand and twenty two thousand CFM.
The difference between Schaefer fans and other fans is that Schaefer fans can be used together with variable frequency drives that enable the farmer to adjust fan speed depending on temperature and humidity. On milder days the fans are capable of running half speed which conserves electricity whilst still supplying some form of airflow. With the weather now reaching forty degrees or more the fans may be switched up to full power.
The flexibility can be useful in the current pakistan dairy fan which have automated climate control systems in place. The galvanized structure is specially designed to withstand corrosion in farm structures. The Schaefer fans are frequently introduced into curtain side barns where they are installed into wall panels and automatically controlled. Schaefer fan prices in pakistan of dairy farm fan price in pakistan will be between PKR 50,000 to PKR 90,000. They are somewhere in between between high-end European brand and low-end local units.
Implementation, Costs & ROI to Pakistani Farmers.
Calculation: How many fans your dairy needs.
It is not just half the battle to select the right Dairy Fans to use in Pakistan. The other half is putting in the proper number of fans to fit your particular shed size and number of animals. There will be too few fans who will leave hot spots, where cows are still experiencing heat stress. Excessive fans is not only a waste of electricity but it can also cause the draft to be very uncomfortable.
\Most Pakistani dairy farms can be worked out by a simple formula. Adult cows have four hundred and eight hundred to four hundred and forty CFM of direct airflow contingent on temperature. At forty degrees Celsius, strive towards the greater. Divide the total number of cows that you have by six hundred to calculate how many CFM you need on average. Divide that total then by the CFM rating of the fan that you have selected.
As an illustration, a farm that has fifty cows requires some thirty thousand CFM. Suppose you choose a dairy fan made locally with a rating of fifteen thousand CFM then you will have to at least purchase two fans. Placement is however very important. The fans must be not more than twenty or twenty five feet apart along the sidewalls or ceiling. In longer sheds, it is worthwhile to consider placing fans to push the air in one direction so as to create a continuous breeze.
In the case of ventilation of tunnels, exhaust fans can be installed on one end and air inlets on the opposite end. By installing the fans properly, you will only need twenty percent of the number of fans for dairy fan you would need otherwise (compared to random installation).
Long life installation and maintenance tips.
Fans used to ventilate sheds in dairy farm fan price in Pakistan cannot be installed without consideration of the local conditions. Install wall fans on the walls at 8 to 12 feet (2.6 to 4.0 feet) above the floor. It is sufficiently high to keep them out of the way of animals, but low enough to cause the air to come down their backs. In the case of ceiling mounted fans, make sure that the roof structure is capable of supporting the weight.
The sheds used by many Pakistan dairy sheds have wooden trusses or light gauge steel which might not support heavy industrial fans. It is always important to use vibration dampening mounts so as to reduce the noise and the screws do not become loose with time. Supply of electricity should be properly grounded and should have circuit breakers. Voltage stabilizers are highly encouraged particularly where the power in rural regions varies greatly.
One large stabilizer with several fans is cheaper compared to the individual units. Repairs are simple, yet necessary. Within weeks, dust appears on fan blades and this cuts the flow of air by up to forty percent. Wipe blades with dry cloth or soft brush after two weeks during the hot season. Check motor bearings after every three months and using high temperature grease where necessary.
Be careful of odd sounds which may be evidence of loose blades or broken bearings. Have all electrical connections inspected prior to each summer season, and all frayed wires replaced. A well serviced dairy fan will last between five to seven years in Pakistani conditions whereas a neglected fan may fail within two years.
Knowledge of the Investment and Dairy Farm Fan Price in Pakistan.
The price of dairy farm fans in pakistan is varying, however, the actual price involves the purchase price, installation, electricity consumption and the maintenance of the a dairy fan. In the case of a typical ventilation system of a medium sized farm with 50 cows, the average ventilation system may comprise of four locally manufactured fans of PKR 35,000 each making a total of PKR 140,000. Installation with wiring, switches and stabilizers will increase the cost by circa PKR 30,000.
When running four fans, 18 hours a day in summer, the cost of electricity to run the four fans is PKR 25 per unit, equating to approximately PKR 12,000 per month. The annual maintenance is an extra PKR 5,000. The initial investment in the first year is expected to be PKR 187, 000. Now consider this with the price of heat stress. One cow with moderate heat stress decreases the milk production by three to five liters per day.
Fifty cows i.e. two hundred liters per day wasted. Nineteen thousand liters or more than a ninety day summer. At PKR 120 per liter, the loss is PKR 2,160,000. Less expensive fans that can save a loss of more than two million rupees can prevent the loss of over two million rupees. The payback period is calculated in weeks, and not years.
Pakistan Dairy Cooling-Future of Pakistan.
The future of pakistan dairy fan cooling is in the solar powered, smart ventilation systems. Several companies are currently providing solar ready Dairy Fan in Pakistan which will directly run on DC power during the day. There is a possibility that soon government subsidies on agricultural solar installations will include ventilation equipment.
With temperature and humidity sensors, smart fans will automatically change speed depending on the real time conditions and therefore will save power without having to compromise the comfort of the animal.
With the pakistan dairy fan sector still in the modernization stage of its evolution, the use of proper fans in the ventilation of dairy farm ventilation will soon be a normal aspect of its evolution as opposed to being an exceptional aspect of its evolution. Investing farmers today will enjoy better health of the animals, milk production, and have an edge over their competitors.
Conclusion
An environment of heat stress is not an inevitable fact of dairy farming in Pakistan. It is an issue that has a definite and affordable answer. The six heavy duty fans discussed in this paper provide alternatives to all budgets, between the PKR 18,000 local cage fan and PKR 400,000 Big Ass Fans HVLS system. The most important thing is to act.
Evaluate your shed, estimate your airflow requirements and invest in appropriate Dairy Fans in Pakistan before the next summer season hits. Your cows will have more milk put into them, they will be healthier and they will reward you with more profits. Keep not the heat to rob you of that you have so hard won to establish.
