Question: What Is TR Capacity In Cooling Towers?

What is TR cooling capacity?

Ton of Refrigeration (TR): Ton of Refrigeration (abbreviated as TR) is an important historical unit of refrigeration capacity.

American Society of Heating, Refrigerating and Airconditioning Engineers (ASHRAE) defines 1 TR as equivalent to a refrigeration capacity of 3516.85 W or 3023.95 kcal/h..

How do you size a cooling tower?

For most wet cooling tower applications, optimum cooling tower size may be determined by a combination of four different metrics: Heat Load, Range, Approach, and Wet Bulb Temperature. In order to understand how these factors influence cooling tower size, it is first necessary to give the terms some context.

How do you calculate cooling water flow rate?

Chilled Water SystemsTotal Heat Removed. The total heat removed by an air condition chilled-water system can be calculated. h = 500 q dt (1) where. … Evaporator Flow Rate. The evaporator water flow rate can be calculated. qe = htons 24 / dt (2) where. … Condenser Flow Rate. The condenser water flow rate: qc = htons 30 / dt (3) where.

How is ikW TR calculated?

The higher the EER, the more efficient the unit. Main performance parameter is ikW/TR and it is define by ratio of power input to compressor divided by tons of cooling produced. Lower ikW/TR indicates higher efficiency. COP (Co – efficient of Performance) is define by ratio of EER by 3.413.

How do you calculate TR on a compressor?

One short ton = 2000 lb, Heat extracted = 2000 x 144/24 hr = 288000 Btu/24 hr = 12000 Btu/hr = 200 Btu/min, 1 ton refrigeration = 200 Btu/min = 3.517 kJ/s = 3.517 kW = 4.713 HP .

How do you calculate the heat rejection capacity of a cooling tower?

Calculation of Heat Rejection Capacity and Selection of Cooling TowerT1 Inlet water temperature to chiller: 33℃T2 Outlet water temperature after heat exchange: 38℃M Water flow rate for chiller: 6000 liter/h.Heat rejection capacity calculation: Q = (38-33)*6000= 30,000 Kcal/h.

Which type of cooling tower is more efficient?

The film type of fill is the more efficient and provides same heat transfer in a smaller volume than the splash fill. Cold water basin: The cold water basin, located at or near the bottom of the tower, receives the cooled water that flows down through the tower and fill.

How do you calculate cooling capacity?

Using the energy equation of Q = ṁ 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 causes a cooling tower to overflow?

Overflow: If the water level in the basin gets too high, it will flow through here and out to a drain. Drain: Water will be drained from the cooling tower for maintenance purposes but also periodically during normal operation when the level of impurities in the water gets too high.

What is cooling load calculation?

Calculating a Home’s Cooling Load A home’s cooling load is a measure of how much an air conditioning unit needs to effect cooling in a room of a given size. It is measured in British Thermal Units, which is usually abbreviated to BTUs. … This is the measure of the BTU cooling load of the space.

How do I calculate flow rate?

Flow rate is the volume of fluid per unit time flowing past a point through the area A. Here the shaded cylinder of fluid flows past point P in a uniform pipe in time t. The volume of the cylinder is Ad and the average velocity is ¯¯¯v=d/t v ¯ = d / t so that the flow rate is Q=Ad/t=A¯¯¯v Q = Ad / t = A v ¯ .

What is cooling capacity in kW?

Cooling capacity is the measure of a cooling system’s ability to remove heat. The SI unit is watt (W). Another unit common in non-metric regions or sectors is the ton of refrigeration, which describes the amount of water at freezing temperature that can be frozen in 24 hours, equivalent to 3.5 kW or 12,000 BTU/h.