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I am aware of the fact that high condenser approach is caused due to fouled condenser tubes and/or low water flow in a shell and tube condenser of a water cooled centrifugal chiller. Are there, any other reasons for the high condenser approach?. Would like to get the experts view on...
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Normally the duct design and construction is divided as low, medium and high pressure system. My question is, as to when and why the flanged duct connection in supply and return ducting is required and recommended, what is the basis of this recommendation? I appreciate and thanks any...
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I appreciate any responses from our group of experts. Can anybody explain the function of demisters and the labyrinths in the centrifugal chillers.
Thanks in advance
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With the scheduled phase out of the CFC based refrigerant(R-12) in the near future, what would be the correct and economical solution for the existing chillers with R-12 refrigerant, is it retrofitting or replacement?.Views and suggestions of the experts in the field are highly...
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During the low cooling load demand period combined with low ambient conditions, the problem of oil recovery to the oil sumps becomes very serious and sometimes the oli level in the sight glass dispappears, this requires oil charging. Again as the demands increases and also the...
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I have noticed using eccentric reducer at the pump suction for horizontal centrifugal pumps "Double Suction Split Case" for water pumping in HVAC application. Is this eccentric reducer required for all types of pumps like vertical centrifugal pumps and the end suction centrifugal...
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Cooling tower basin cleaning system are being promoted by many suppliers as an easy and cost effective means of controlling and minimizing the water consumption especially in the areas of water scarcity. These systems have hydro boosters installed in the piping network which is laid...
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What is the purpose of having Nozzles mounted or installed on the rotor shaft of hermetic centrifugal chillers (high pressure chillers) between the motor and the compressor section. I was told that their function is to create a low pressure zone in the vicinity, thereby...
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UV-C lamps are being promoted by many reputed manufacturers of HVAC equipment as a easy and cost effective means of controlling and improving the IAQ. Can anybody comment on the pros and cons of using these lamps.
Thanks
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We have a 500 Tons capacity centrifugal water cooled chiller serving air conditioning to a special function auditorium. This building is rarely used and if use it is used for a short period of time, say 3-5 hours for exams and seminars. In addition to this during winter the chiller loads to...
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Absorber temperature loss for vapor absorption chiller is done for the determination of the non condensables. Can anybody comment more on this..as what exactly is done and deduced from this test. Chiller in the discussion is Lithium Bromide - Water combination used for human comfort...
Hi, My question is about the vibration that is experienced in the suction piping of a single stage centrifugal pump in a chilled water application for human comfort.
The piping arrangement is like this; suction has positive pressure with a air separator and a strainer installed just before the...
Normally the leaving air temperature from the air handling unit in a chilled water system is design at 54-56 deg F with 90-95 % RH (chilled water inlet temp is 45 deg F). My question is, Is it possible to have a leaving air temperature of 60-64 Deg F but with a lower RH value say 65-70 %. What...
Can anybody advice, how to determine the optimum amount of refrigerant (water) in a vapor absorption chiller. This chiller does not have the sight glasses to determine the level in the shell. Is there a procedure to determine this using the operating parameters.
Thanks in advance
I am experiencing Oil loss and Oil recovery Problem in a Centrifugal Chiller, Capacity 1000 TOns. Oil level in the sight glass disappear within 10 to 15 minutes of the chiller operation. Can anybody advice me on the causes, Thnaks in advance.
