The cooling tower Heat load is calculated by the below formula: Heat Load=gpm*8.33*60*R. where: gpm=flow rate of water in gallons per minute (you can convert units as you wish, but gpm is the standard unit used for cooling tower flow rates) 8.33 is a constant.
Using the formula of GPM X TD X 500 yields: 100 X (85-78) X 500 becomes 100 X 7 X 500 = 350,000 BTU/Hr. Therefore, the heat load on the oven is 350,000 BTU/Hr.
Beside above, what is a heat load? The heating load is the amount of heat energy that would need to be added to a space to maintain the temperature in an acceptable range. The cooling load is the amount of heat energy that would need to be removed from a space (cooling) to maintain the temperature in an acceptable range.
In respect to this, what is cooling tower capacity?
Capacity. Cooling towers are usually described by their tons of cooling capacity. The cooling capacity indicates the rate at which the cooling tower can transfer heat. One ton of cooling is equal to the removal of 12,000 BTUs (British thermal units) per hour from water.
What is inside a cooling tower?
A cooling tower is a heat exchanger, inside of which heat is withdrawn from the water by contact between the water and the air. The heat transfer occurs through the heat exchange between air and water and through the evaporation of a small part of the water that needs to be cooled.
What is LG ratio in cooling tower?
For different wet-bulb temperatures, one finds that the results obtained for the cooling tower liquid–gas ratio (LG ratio), defined as the ratio of the water flow rate ratio to the airflow rate ratio, are clustered together and can be approximated by straight lines over a wide range of the variable w .
What is the meaning of TR in cooling tower?
TR basically means TON OF REFRIGERATION. It is the unit of cooling capacity. It got its unit by calculating colling effect generated by uniform melting of 1 ton of ice from and at 0°C in 24 hrs. 1 TR = 12000 BTU/hr or 3.5 kW.
How do you calculate the heat rejection of a cooling tower?
Range = Entering Water Temperature – Leaving Water Temperature. Approach = Leaving Water Temperature – Ambient Wet-Bulb Temperature. Heat Rejected by a Cooling Tower: BTUH = (Flow) X (Range) X 500 X (SG) X (SH) Refrigeration Tons: Tons = Cooling Tower Tons: Tons =
What is the temperature of cooling tower water?
Maximum Entering Water Temperature As previously stated, typical HVAC conditions call for an entering water temperature of approximately 95ºF (35.0ºC). All BAC Cooling Towers are capable of withstanding temperatures of at least 120ºF (48.9ºC) with standard fill materials.
What is the meaning of cooling capacity?
Cooling capacity is the measure of a cooling system’s ability to remove heat. The SI units are watts (W). Another common unit is the ton of refrigeration, which describes the amount of water at freezing temperature that can be frozen in a day (24 hours).
What is approach and range in cooling tower?
Range and Approach Approach is the temperature of the water leaving the cooling tower (in this case, 85°F nominal) minus the ambient web bulb temperature (78°F wet bulb) or 7°F.
How can we increase the efficiency of a cooling tower?
You can improve water efficiency in your water cooling towers and subsequently preserve energy and save you money. Piping Change. Simple repairs like a change to the water piping can help you mange your energy consumption. Focus on Recycling. Periodically Inspect all Equipment. Increase Cooling Cycles.
What is the specific heat of water?
The specific heat of water is 1 calorie/gram °C = 4.186 joule/gram °C which is higher than any other common substance. As a result, water plays a very important role in temperature regulation.
What is the principle of cooling tower?
Cooling tower works basically on the principle of evaporation. In this process the sensible heat of hot water is converted to latent heat of vaporisation. Thus reducing the temperature of the exposed surface area of water to the air.
How do you calculate gpm for a cooling tower?
= GPM X 500 X Temp Rise Typical chilled water system design flow rates 2.4 GPM per ton (assuming 10oF difference between entering and leaving temperatures) Evaporation rate of cooling tower condenser water 3 GPM per 100 tons Condenser water flow rate requirement 3 GPM per ton BTU per ton of cooling 12,000 BTU = 1 ton
How is cooling capacity measured?
Using the energy equation of Q = ? x Cp x ΔT we can calculate the cooling capacity. We add 273.15K to the celcius to convert it to units of Kelvin. The Specific heat capacity (Cp) is measured in units of kJ per kg per Kelvin. This gives us a final answer of Q = 2,500kW of cooling.
What is the difference between a chiller and a cooling tower?
Chillers utilize compressors, evaporator heat exchangers and condenser heat exchangers. The condenser heat exchanger is the major component that rejects heat from the chillers to air. Cooling towers are generally used to provide cooled water to electric power generation and mechanical processes.
What is the capacity of chiller?
Centralized chillers generally have capacities ranging from ten tons to hundreds or thousands of tons. Chilled water is used to cool and dehumidify air in mid- to large-size commercial, industrial, and institutional (CII) facilities. Water chillers can be water-cooled, air-cooled, or evaporatively cooled.
How do you calculate cooling capacity?
To calculate the size, simply multiply the length times the width of the room or area to be cooled. Then, as a practical number, multiply that total times 25 BTU. This allows ample cooling, whether it is a rainy, moist day or a hot, sunny, humid day.