In a one tonne airconditioner, what does one tonne stand for?
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In air conditioning, 1 ton = 12,000 BTU cooling power
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1 kg = 0.0011 ton\ntherefore 200 kg = 0.22 tons
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You didn't give us much to go on, but it looks like DeltaT is a temperature difference, and btu/(1.08*cfm) is heat in British Thermal Units (BTU) divided by 1.08 times an air flow rate in cubic feet per minute (cfm). There is a units problem, though. I'd guess the "btu" part actually should be a heat rate, say BTU/minute or BTU/hour. The formula would then indicate how much an air stream was heated, given heat rate and flow rate.\nPer the ref. below, the density of air at 70F is D = 0.07492 lb/ft^3 and the mass specific heat is MSH = 0.2403 BTU/(degreeF-lb). The volume specific heat VSH = D * MSH =  0.01800 BTU/degreeF-ft^3). The temperature change DT of x ft^3 air due to input of y BTU = y / (x * VSH). A flow of 1 cfm (60 ft^3/hr) and a heat input of 1 BTU/hr will raise the air temperature by 1/(60 * 0.01800) = 1/1.08 F. So the units of your formula are DeltaT in degrees F, "btu" in BTU/hr, and cfm in ft^3/min.
227415
actual pressure of the vapour\ndivided by\nthe maximum pressure of the vapour at 'that' temperature\nequals (in this case) 1 = 100%
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the principle is by compressing a coolant, and injecting this coolant into a small pipe, the size will minimize heat built up, as the coolant moves around the pipe or coil, air is blow into this coil which result into cooler air.\n\nThe coolant is then compress back to repeat the process.
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compressor: compresses things\nevaporator: evaporates things\ncondensor: condenses things\nmetering device: meters things\n\ngood luck
45731
when there is a low pressure system that brings all the air towards it
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A damper restricts the flow, and can be adjusted to let more through or less through.\n\nA valve will be opened or closed.\n\nThink of it in the same fashion as in an air conditioning system
252526
none. amps has no weight, its a flow of current. It's like calculating tonnage to speed. How many tons does 100 mph represent?
261417
A "Split" air conditioner consists of an two main parts (that are connected only by copper tubing with refrigerant in them - hence the name "split"):\n\nPart (1): The condenser that 'dumps' heat from the conditioned space (like a house) to the outdoors (typically).  It is called a condenser because the refrigerant (the liquid/vapor that absorbs and dumps heat) changes state from a vapor to a liquid while transferring heat - it cools down, or 'condenses'.\n\nPart (2): The evaporator 'absorbs' heat from the conditioned space.  It is called an evaporator because the regrigerant evaporates in the process - it goes from a mixed state of liquid and vapor to all vapor.  In the process it cools the conditioned space.\n\nIn addtion to these two main parts is the compressor that compresses the vaporized refrigerant as it comes out of the evaporator and before it goes into the condensor.  It raised the temperature of the vapor without adding heat. It does this by performing 'work' on the vapor.
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h-heating\nv- ventillation\na- air \nc- conditioning\nr- refrigeration\n\nrefrigeration is cooling the air\n\nconditioning is changing the state of the air \n(eg. humidity, pressure, volume, etc)
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http://www.nphheaters.com/products/thermocouples/thermocouples_int_codes.html\n\ntry it..
380730
The basis of most (more than 95%) refrigeration systems is the ' vapour compression cycle". The media (vapour) is Refrigerant (hydrochlorofluorocarbons - HCFC or hydrofluorocarbons - HFC) or freon which is non-toxic, non-explosive and non-corrosive. These Refrigerants have a boiling point of aprox. Minus 40°C which means that even if the air (outside or inside) temperature is as low as minus 39°C it still has heat to be absorbed by refrigerants. \n\nThe vapour compression cycle requires four components:\n\n1) The compressor: To raise the pressure of low-pressure low temperature gas to high-pressure high temperature gas. There are many types of compressors; the most common are Reciprocating, Rotary, Scroll, Screw and Centrifugal. \n2) The Condenser: To change the state of high-pressure, high temperature gas to high-pressure, high temperature LIQUID. This is achieved by passing ambient air (known as air-cooled) or water (known as water-cooled) over the condenser tubes. \n3) The Expansion Device: The purpose of the device is to change the state of the refrigerant from high-pressure, high temperature liquid to low pressure low temperature saturated liquid. This is achieved by passing the liquid through an orifice. \n4) The Evaporator: To absorb the heat from room air or water, which in the case of a chiller is circulated around the evaporator coil. This will change the state of low-pressure, low temperature saturated liquid to low pressure, low/medium temperature gas. \nThese components are common to the vast majority of domestic refrigerators and appear in slightly different forms in 95% of air conditioning and refrigeration systems, Domestic, commercial or industrial. This vapour compression cycle if reversed (condenser becomes evaporator and visa versa) can now absorb heat from outside and transfer it to inside, hence saving energy. This is called Reverse Cycle Heat Pump. Energy savings can be as high as 4 to 1 (for every kW input we get 4 kW output).
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Usually psi (pounds per square inch).\n\nAloha
517321
cfm. Cubic feet per minute, a measure of air flow
1101437
1) One kilogram is equivalent to 0.001 tonnes (metric) (European: tonne)\nOne metric tons is to 1000 kilogram\n\n\n2) One kilogram is equivalent to 0.001102311310924388 tons (United States measurement also known as a short ton)\nOne tons is to 1000 kilogram907.18474
904290
One US ton is 2000 pounds. Now what was the question?