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Thanks for your reply srfish. Plz check other things too and tell me whether i have taken right values for R-404 at given condensing and evaporating temperature????? I request other members too to take part in this......

extract of book is attached herehttp://files.engineering.com/getfile.aspx?folder=43aec4e3-47f6-47fd-bf73-1f00bb75fcb9&file=53304222-Heat-transfer-equipment.pdf

Dear all, Its the first time that i am designing the shell and tube type evaporator and for this i have made an excel sheet for ease of calculations but i am not sure and content whether i have done right or wrong and for this i have attached my calculation sheet for you to check and comment if...

ooohhhh....... that water will not be use as drinking water.... actually in Sharjah-UAE... its very hot during summer specially in day times its impossible even to touch the water coming out of the tap and for this purpose my company located in sharjah wants me to design this system.......

@ willard3 and DRWeig: What is so amazing in this design??? if any, then plz tell me how the evaporator of screw, scroll and piston type chiller works??? @ ChasBean1: please check and reply to my answer........ @ marcoh: please share your comments regarding my calculations.... I am looking...

Thanks alot marcoh for your reply. Actually its the first time i am going to design and manufacture this system on my own and my calculations for the system are as follows: q = 500 * gpm * (T1 - T2) if i take a compressor having capacity of 5 ton then the equation will be 60000 btu/hr =...

Dear all, I am going to design a DX evaporator coil to be immersed inside the domestic water storage tank of 1000 gallons to reduce the temperature of water from 50 degree centigrade to 28 degree centigrade. Please tell me the way of calculating compressor capacity, evaporator coil length, dia...

Yes definately i have started doing this but want something in detail from this forum......... please share.....

Dear all, I am working with a radiator manufacturing company and we want to expand our business to HVAC market and for this we want to design and manufacture air/water cooled condensers. All i want from you to guide me that from where should i get start and please send me reference material...

@ willard3, Room conditions: Dry bulb: 75°F and RH: 50%

Hello guys, why we use supply air (Leaving air) temperature as "54 degree Fahrenheit"? What is the RH of the leaving air from the coil? How cooling coil dehumidify air? and what is Coil ADP (Apparatus dew point)?

Hi every body, Can I use in line centrifugal pump to pump water from underground water tank to over head tank? The suction lift is about 10' and the total head is 90'and I want to use upvc pipe for transportation. And further more that what should be the ideal distance between the elbow of...

Thanks very much BigInch, your answer perfectly satisfied me. @Artisi, Thanks for the appreciation brother. Actually when i joined this forum i unfortunately didnt see the separate "pump engineering forum" but when i came to know about it i put the same sort of question with some changes on...

Understood and agreed :)

You meant you would select 3 pumps of 500 gpm??(2 duty pumps arrange in parellel and one standby) if yes, so why? is there any rule of thumb for this? And what is the diversity?

Hi every body, If i have 1000gpm of chilled water to pump having total head to be 150' then how many pumps should i select and put them in parellel? Is there any rule of thumb that this much pump should be placed? or can i select only one pump? What should be the diversity before selecting the...

@jte In this forum we exchange our knowledge and engineering services for free. If you want know some thing or required any help you are most welcome.......

Its an office building and i am going to select water cooled chiller. Assume i have no limitations of space then what should be my considerations? and if i have limited space then?

Thanks for the reply guys. Actually i have to serve three building with chilled water and for that the flow is 850 gpm and head is 145' (I just count longest run and found dynamic head and add static head and add minor losses). So if i want to put two pumps in parellel other than a standby, can...

If I have to pump chilled water at a rate of 850 gpm, how many pumps should be ideal for pumping this amount of water? On which basis we select that this much pumps should be chosen? your answers will be highly appreciated.