Search:

You do not need to calculate PRV. You need to calculate maximum pressure that PRV will experience and based on that, and pressure that you want you should than choose one from the catalogue.

Purpose of the pressurisation unit in building services is to:

1. To keep pressure in pipes above atmospheric at a point where static pressure is at lowest point so that we do not have air...

You will have to be more specific :)

This is not right. One TR (ton of refrigeration) is equal to 3.51 kW so 10 TR would be 35.1 kW

It depends on your local plumbing code and pipe size, there is no universal value

Always after the heat exchanger, coil etc. 3 port valves are designed to have two inputs and one output (to work in mixing configuration). If you put them before coil than they will have one input...

Latent heat does contribute to the total cooling load of a building. Your chiller capacity will be equal to the sum of latent and sensible heat (total heat)

Air is mixture of several gases but for...

Nothing to do with starving the coil. Pressure drop through the circuit (coil + valve) will be the same wherever you install the valve. Because valve and coil are in series total pressure drop = sum...

If we talk about 3-port control valves than the reason for installing them into return side is because those valves are physically designed to have two inputs and one output. If you install them in...

Swimming pools are quite complex to design and there is no simple and quick answer but the general procedure is as follows

1. you need to calculate rate of evaporation based on pool usage, water...

Jockey pumps usually switch on and off on a pressure sensor. You should not have pump starting more than 4-5 times per hour because of the motor protection. You can reduce number of starts per hour...

If you are designing primary/secondary system than you should have 3.5 l of water per kw of minimum installed capacity. That volume should be in the primary circuit. Your minimum installed capacity...

Primary pumps are constant flow and they pump water in a circuit around the chiller. Secondary pumps are variable flow and they pump water from the primary circuit to the building as required.

If...

You can locate pressurisation unit anywhere you want. If your chiller and pumps are located on level 0 than locating the pressurisation unit at highest level will make it smaller and cheaper than if...