For flow control at the outlet of chiller and condenser and at the inlet of cooling tower cells we have been using Globe valve or Balancing valves to set the correct flow across respective equipments.
One of the vendor wants to use butterfly valve as isolation as well as flow control, Is it...
Can you please let me know the difference between the thermal diffuser and Powered VAV.
Where it more apt to use Thermally actuated diffuser and where powered VAV box.
Can Thermal diffuser can be used where there is no VFD/VSD on AHU fan Motor.
We normally size the pipes and isolation valves strainer or suction strainer cum flow straightener from suction of the pump to the suction header as the same size of suction size in the pump. Similarly the discharge line up to header with isolation valve and non return valve is same size as the...
We have Chilled water system with Three Chillers catered by Four Primary Pumps and four Secondary pumps primary pump flow is 155 Meter cube per hour, where as secondary pump is 117 M3 per hour.
The suction at Secondary pump is negative Inlet pressure to Chiller from primary pump is 1.8 Kg/cm2...
For pumps off late many of the consultants suggest Suction strainer cum flow straightener instead of conventional Y-strainer or pot strainer( for larger diameter).
Request to elucidate with the specific advantages and limitations of the Suction strainer cum flow straightener.
Is there any formula to ascertain the bleed off recommended for cooling towers to ensure concentration build up in the cooling water system.We find many of the cooling towers does not have the provision for bleed off thereby the refrigeration system operates almost same condensing temperature as...
Interested to know how to go about sizing the Hot well /Cold well tank for chilled water system.
We want hot well /cold well tank for acting as buffer tank the tank shall have bifurcation up to 75% height so that hot well is around 40% and cold well is 60 % holding capacity.
The chilled water...
Off late I have come across manufacturer after manufacturer coming out with VRV /VRF system and aggressively .It is being marketed for most of the applications.I have found the economics does not work out in favor of the VRV /VRF compared to Chilled water system.
Even in VRV/VRF digital scroll...
Have come across Fabric duct for air distribution and would appreciate more details like what is the power saving compared to sheet metal ducts.
I am sure the fabric duct are recyclable and uses less power for production compared to steel ducting where power used is very high.
Recently at a residence a high wall room air conditioner burnt out resulting in immediate death of an infant and death of mother after few days. Boy recovered and alive.
what are the causes for such accidents ? is it due to incoming power given to indoor units or due to bursting of capacitor...
Recently in one of the customers place the out door unit of VRF system blasted therby damaging all electrical connections.Manufacturer have replaced the unit and taken the unit for investigation.The refrigerant used is R-410A and compressor apparently NO DAMAGE.
It is intriguing and appears to...
