Rawal - HVAC-Talk
2015年1月22日 · If you already have the Rawal valve just use it. So far as I can understand them all they are is an expansion chamber in the suction line into which HG is injected. Incorporated …
Rawal APR Control - HVAC-Talk
2005年6月21日 · The company I work for purchased one of these valves to install in one of our test units in our shop several years ago. After studying the valve, its operation, and the theory …
Anyone have any experience with the Rawal APR control in …
2015年10月12日 · Anyone have any experience with the Rawal APR control in residential application? Have single stage AC w/WH dehum. Dehum runs almost 24/7. Prefer to have AC …
Frankenstein compressor - HVAC-Talk
2017年4月6日 · The Rawal valve would also use more energy to do less work, since the back pressure will be higher. Besides that, because the hot gas is not being piped into the …
Calling all humidity guru's - HVAC-Talk
2012年3月25日 · From speaking with Al B. the regional sales engineer for rawal, they accomplish increased run times by limiting the evap temperature. Reply 03-26-2012, 10:06 PM #19
Adding dehumidification to 40 ton package unit - HVAC-Talk
2017年6月1日 · A Rawal valve on first stage and a dehumidistat to energize first stage on a rise in RH past set point along with constant fan would be my choice. On a drop in dry bulb under …
York RTU/Johnson Controls space humidity issue. - HVAC-Talk
2021年6月14日 · An idea that might be applicable is the Rawal Devices APR control. Google it. It is a combination HGBP and Desuperheating txv with a mixing chamber made for just such an …
Humidity control in pharmaceutical room - HVAC-Talk
2015年8月10日 · Looking for a solution to controlling temperature and humidity in a 12 x 10 clean room , within a pharmacy, for manufacturing pharmaceutical.
My AC system runs very short cycles - HVAC-Talk
2016年8月30日 · This can be accomplished with either a scroll compressor with a slide plate on the scroll plate, a scroll compressor with a hot gas unloader (causes scroll plates to separate …
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ultraDRY - HVAC-Talk
TEST mode and open the Rawal valve. n) Allow system to stabilize and check sub cooling again. o) Add/Remove refrigerant as necessary to maintain about 4 degree of sub cooling. p) …
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