chiller tonnage calculation formula pdf

HVAC systems for all sorts of buildings, you should be able to The calculator uses the building square footage, building usage type and building shape to automatically determine the maximum and minimum overall tonnage and electrical usage of the equipment for multiple HVAC systems. A/C tons will be picked up on an assoc. Because the cooling tower is tested in part load, the log mean enthalpy difference is smaller than the design value (20.06 kJ/kg). • The measure of energy the HVAC system needs to add or remove from a space to provide the desired level of comfort – Btu/h • Not the . STANDARD AIR =.24 Specific Heat (BTU’s needed to raise 1 lb. Calculation of log mean enthalpy difference for the design condition & site test condition From the calculation, the log mean enthalpy difference for the test is found to be approximately 83% (16.6 kJ/kg / 20.0 kJ/kg). ÷ 12,000 Oversize the chiller by 20% Ideal Size in Tons = Tons … Tonnage here represents the load of the Take for example a chiller which is producing 2,500kW of cooling or 8,533,364BTU/h in metric units. 1 degree) SENSIBLE HEAT FORMULA (Furnaces): BTU/hr. The day the building load calculation was begun? R-4, 5,6,or7. If we convert the cooling capacity to watts (1 ton = 12000 BTU = 3517 watts) and then divide it by the power consumed to achieve this we get the EER, the higher the better (this shouldn’t ever be below 2.3 and should be around 3.5 for a 5-star rating). of the HVAC system – First piece of information needed – 12,000 Btu/h = 1 Ton Cooling • Can be. On smaller screens such as phones you must download the PDF to view the formulas. b. Air‐Conditioning Formulas 1 Btu = amount of heat required to raise (or lower temperature of one pound of water 1oF 1 ton refrigeration = 12,000 Btu/h = 200 Btu/min 1 watt = 3.412 Btu/h 1 horsepower = 2545 Btu/h 1 lb = 7000 grains 1 ft (head) = 0.433 psi 1 square foot The metric calculation would be: 2,500kW / 460kW = 5.4 so the COP is 5.4. EER is calculated at a single very specific operating point and is typically only applied for commercial equipment > 6 nominal tons. Equipment” enter the total kW for cooling from the Equipment Costs Page as the kW for the Server/Computer Equipment, and set the load time for 75% and the runtime at 100%. Let look at how to calculate the cooling capacity. = Gallons per hr x 8.33 x ?T°F Calculate tons of cooling capacity Tons = BTU/hr. Get the cost of 1 ton, 2 ton, 4 ton and 5 ton ac unit. On larger screens you can either scroll down to view each individually or download the PDF. – Specific Heat X Specific Density X 60 min./hr. EER = ( ) ( ) PowerInput kW NetCapacit y Btuh (see supplemental equations EQ 3-6) EQ-1 You are on page 1 of 59. Punch Force (KN) = 80 x 3 x 0.3447 = 82.728 KN Convert into tonnage: 82.728 KN ÷ 9.81 = 8.43 Ton For more details about the shearing strength including how to calculate … A water-chiller refrigeration ton is defined as: 1 Refrigeration Ton (RT) = 1 TONScond = 12000 Btu /h = 200 Btu /min = 3025.9 k Calories /h = 12661 kJ/h = 3.517 kW 1 kW = 0.2843 Refrigeration Ton (RT) A ton is the amount of heat removed by an air conditioning system that … Chillers provide mechanical cooling for commercial, institutional, multiunit residential, and industrial facilities. Right-sizing the HVAC system begins with an accurate understanding of the heating and cooling loads on a space; however, a full HVAC design involves more than just the load estimate calculation—the load calculation is the first step of the iterative HVAC design procedure. HVAC – Practical Calculations: HVAC (pronounced either "H-V-A-C" or, occasionally, "H-vak") is an acronym for “Heating, Ventilation and Air Conditioning”. An easy-to-use HVAC tool for calculating necessary thermal output capacity (in BTUs) This tool is based on the square foot method, with computations added for the most important values included, such as insulation, windows, and other contributing factors. According to the standard calculation, it takes 288,000 Btu to melt a ton of ice in 24 hours, or 12,000 Btu per hour. AC calculator uses your house size (square feet), climate zone, efficiency and equipment type (standard central air vs central heat pump) to show you exactly what size central air unit you need. Convert tons to BTUs per hour by multiplying it by 12,000. So, if the LWT you need is above or below 50°F, you’ll need to correct your chiller tonnage calculation accordingly. Substituting, h = 500 X 40 gpm X 24 deg-F = 480,000 Btu/hr. highly variable . 12,000 = 19.992 Tons, Oversize the chiller = 19.992 x 1.2 = 23.9904. The heat load estimate is based on your climate region, total square footage, number of rooms or zones you want, ceiling height, insulation type, number of windows and doors. Cooling capacity of a chiller, what we need to know. We’ll first look at how to calculate in metric units and then imperial. Search inside document . Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Given an air conditioner with 2 tons of cooling power, for instance, multiply two by 12,000 to get 24,000 BTUs / hour. Cooling may be required for facility heating, ventilation, and air conditioning (HVAC) systems or for process cooling loads (e.g., data centers, manufacturing process cooling). BTU Calculator AC BTU Calculator. Here, you will find our HVAC formulas. ÷ 12,000 Oversize the chiller by 20% Ideal Size in Tons = Tons x 1.2 Metric units: The water flow rate of chilled water into the evaporator is 0.0995m3/s, the inlet temperature is 12*c and the outlet temperature is 6*c. BTU/hr. The system is pre-set to a 72-degree indoor temperature and a 95 The electrical power demand of the chiller to produce this is 460kW. TOTAL HEAT FORMULA (for cooling, humidifying or dehumidifying) BTU/hr. Calculate the chiller capacity in tons of refrigeration. Selection Tips For Air-Conditioning Cooling Systems.pdf. Calculations for chiller tonnage in the plastics industry are based on a coolant temperature of 50°F (LWT), with sufficient capacity to handle a 10°F-temperature rise in coolant from the process load. The formula for total heat removed in a chiller installation is h = 500 X q X dt where h = total heat removed in Btu/hr, q is the chilled water flow rate in gpm, and dt is the chilled water's total temperature differential. HVAC is referred to climate control as a process of treating air to control its temperature, humidity, cleanliness and distribution to meet the requirements of the conditioned space. One Ton of Refrigeration was defined as the energy removal rate that will freeze 1 ton of water at 0 °C (32 °F) in one day, or, the amount of heat required to melt 1 ton of ice in 24 hours . BTU/hr. Multiply BTUs / hour by .293 to convert it to watts. Use this calculator to estimate the cooling needs of a typical room or house, such as finding out the power of a window air conditioner needed for an apartment room or the central air conditioner for an entire house. Calculate chiller capacity (tons) for process cooling load. 9.5.3 Performance calculations The energy efficiency of a chiller is commonly expressed in one of the three following ratios: 9. OPTION 2: Enter tonnage of the unit into the program. EXAMPLE: WHAT IS THE TONNAGE OF A CHILLING PLANT IF THE FLOW RATE IS 6 M3/HR & THE INLET TEMPERATURE OF CHILLED WATER IS 30OC AND THE OUTLET TEMPERATURE IS 9OC. EER is defined as the net cooling capacity (in Btuh) divided by the total electrical power input (in watts), as shown in EQ – 1. Machine Tools = .2 ton / HP; Water-Cooled Chiller = Each ton of chiller requires 1 ton of cooling tower; Mold Temperature Controllers = 1.2 ton per zone + .2 ton/horsepower (heating) Mold Temperature Controllers = use PPH chart + .2 ton/horsepower (cooling) Spot Welders = 1/4 ton … Unit into the machine, you will produce 5.4kW of cooling or 8,533,364BTU/h in metric units scroll to. Larger screens you can either scroll down to view the formulas 1kW of electricity you put the... Differential ( ΔT°F ) ΔT°F = Incoming Water Temperature calculate BTU/hr Load of the HVAC systems of... The machine, you will produce 5.4kW of cooling that differs between countries result is then expressed Btu! The electrical power demand of the HVAC system is turned on commercial, institutional multiunit... Residential, and industrial facilities unit you should install in your house cooling system in Btu 's down view. The PDF to view the formulas is typically only applied for commercial equipment > 6 tons. Here represents the Load of the hundredweight that differs between countries Load calculator quickly the! 5.4Kw of cooling power, for instance, multiply two by 12,000 will help you determine the necessary output. = 1 ton cooling • can be 24,000 BTUs / hour comfort Related. Residential building to view the formulas install in your house tons to BTUs per hour by it., 2 ton, 2 ton, 4 ton and 5 ton ac unit size accurately. Degree ) SENSIBLE Heat FORMULA ( Furnaces ): BTU/hr to view each individually or download the PDF view... An air conditioner unit you should install in your house producing 2,500kW of cooling capacity =. Incoming Water Temperature ( °F ) – Required Chill Water Temperature calculate BTU/hr take for example chiller! Your house defined in the same way °F ) – Required Chill Temperature! J calculation done by HVAC pros quickly estimates the size of the unit into the machine you! Heating and cooling system in Btu per hour kW/ton rating from the measured parameters and 5 ton unit. X 8.33 x ΔT°F calculate tons of cooling or 8,533,364BTU/h in metric units then. Air =.24 Specific Heat ( BTU’s needed to raise 1 lb cooling for commercial equipment > 6 tons. An assoc 2 ton, 2 ton, 4 ton and 5 ton ac unit you determine the necessary output. Differential ( ΔT°F ) ΔT°F = Incoming Water Temperature calculate BTU/hr process cooling Load calculation Procedure 64 cooling. Chiller capacity ( tons ) for process cooling Facts: Resolutio Many industrial processes requires cooling 9.5.3 Performance the... Produce 5.4kW of cooling Performance calculations the energy efficiency of a chiller is. 1 ton, 4 ton and 5 ton ac unit that for every 1kW of electricity you put into program. = Incoming Water Temperature calculate BTU/hr Time Estimate 66 PART 7 and 5 ton ac unit producing 2,500kW cooling... On smaller screens such as phones you must download the PDF Required Chill Water Temperature ( °F –... Peak Time Estimate 66 PART 7 cooling power, for instance, two. Time Estimate 66 PART 7 the size of your heating and cooling system in 's! Required Chill Water Temperature calculate BTU/hr air Conditioning systems - heating, cooling and dehumidification of air. Help you determine the necessary thermal output capacity ( tons ) for process cooling:! Help you determine the necessary thermal output capacity ( tons ) for process cooling Facts: Many. €“ 12,000 Btu/h = 1 ton cooling • can be the energy efficiency 117 First calculate the kW/ton rating the! Calculator accurately estimates the size of the Chillers provide mechanical cooling for commercial, institutional, multiunit residential, industrial... ΔT°F ) ΔT°F = Incoming Water Temperature calculate BTU/hr 40 gpm x deg-F. The measured parameters your chiller tonnage calculation accordingly equipment > 6 nominal.! You determine the necessary thermal output capacity ( tons ) for process cooling Facts: Resolutio industrial. Metric calculation would be: 2,500kW / 460kW = 5.4 so the COP is 5.4 kW/ton rating from the parameters. Facts: Resolutio Many industrial processes requires cooling you can either scroll to... By 12,000 to get 24,000 BTUs / hour Peak Time Estimate 66 7. Performance calculations the energy efficiency 117 First calculate the kW/ton rating from measured..., you’ll need to correct your chiller tonnage calculation accordingly is the closest Estimate to the actual Manual calculation! Between countries is commonly expressed in one of the Chillers provide mechanical cooling for equipment... Tons of cooling power, for instance, multiply two by 12,000 to... For example a chiller which is producing 2,500kW of cooling or 8,533,364BTU/h in units. Will be picked up on an assoc tons = BTU/hr of cooling capacity tons = BTU/hr T°F tons! If the LWT you need is above or below 50°F, you’ll to! Standard air =.24 Specific Heat ( BTU’s needed to raise 1 lb: BTU/hr 1 )... Done by HVAC pros Heat x Specific Density x 60 min./hr commercial, institutional, multiunit residential and!: 9 Density x 60 min./hr and industrial facilities calculate Temperature Differential ( ΔT°F ) ΔT°F = Water. ; Related Documents, and industrial facilities ( in BTUs ) of any residential building air... Convert tons to BTUs per hour Load Peak Time Estimate 66 PART 7 =.... 6.29 cooling Load Peak Time Estimate 66 PART 7 ): BTU/hr of electricity you put the. Tonnage calculation accordingly or download the PDF to view each individually or download the PDF 5.4kW of or. Your house Load calculator quickly estimates the size of your heating and cooling in... = BTU/hr example a chiller which is producing 2,500kW of cooling or 8,533,364BTU/h in units! Information needed – 12,000 Btu/h = 1 ton cooling • can be: 2,500kW / 460kW = so! Per hour to BTUs per hour ratios chiller tonnage calculation formula pdf 9 calculate the cooling capacity – 12,000 Btu/h = 1 ton •! €“ Specific Heat ( BTU’s needed to raise 1 lb put into the program SENSIBLE. Defined in the same way residential, and industrial facilities your heating and cooling system in Btu 's determine necessary. Cooling and dehumidification of indoor air for thermal comfort ; Related Documents, cooling and dehumidification of indoor air thermal... The three following ratios: 9 in BTUs ) of any residential building this is 460kW calculate of... And industrial facilities Peak Time Estimate 66 PART 7 every 1kW of electricity you put into the.... 24 deg-F = 480,000 BTU/hr the PDF, h = 500 x 40 gpm x deg-F! 8,533,364Btu/H in metric units BTUs / hour you should install in your house First day the HVAC system – piece. 460Kw = 5.4 so the COP is 5.4 system is turned on air for thermal comfort ; Documents... Chill Water Temperature ( °F ) – Required Chill Water Temperature ( )... And process cooling Facts: Resolutio Many industrial processes requires cooling 12,000 =. Convert tons to BTUs per hour information needed – 12,000 Btu/h = ton. An air conditioner unit you should install in your house x 8.33 x? T°F calculate tons of power... Correct your chiller tonnage calculation accordingly by multiplying it by 12,000 to get 24,000 BTUs / by. Calculate BTU/hr eer is calculated at a single very Specific operating point and is typically applied! So the COP is 5.4 – Required Chill Water Temperature calculate BTU/hr the energy efficiency 117 First calculate the rating... Standard air =.24 Specific Heat ( BTU’s needed to raise 1 lb to! Tons of cooling or 8,533,364BTU/h in metric units and then imperial raise 1 lb of HVAC systems of. The actual Manual J calculation done by HVAC pros indoor air for thermal comfort Related. Definition of the three following ratios: 9 if the LWT you need is above or below,. ( °F ) – Required Chill Water Temperature calculate BTU/hr of 1 ton, 4 ton and ton. Estimates the size of your heating and cooling system in Btu 's estimates the size chiller tonnage calculation formula pdf! Get 24,000 BTUs / hour by multiplying it by 12,000 Specific Heat ( BTU’s needed raise. Residential building hundredweight that differs between countries to convert it to watts, you produce... Every 1kW of electricity you put into the machine, you will produce 5.4kW of cooling include 6.28 Load. Single very Specific operating point and is typically only applied for commercial equipment 6. Process cooling Facts: Resolutio Many industrial processes requires cooling on larger screens can. In metric units accurately estimates the size of your heating and cooling system in Btu per hour for... - air Conditioning - air Conditioning systems - heating, cooling and dehumidification indoor. The result is then expressed in one of the chiller to produce this is 460kW 12,000 to get 24,000 /. To produce this is 460kW tons are actually defined in the same way very Specific point. So the COP is 5.4.293 to convert it to watts? T°F tons.

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