Recent content by EAJ82

if u design it for the operational temperatures this is what happens: at startup the freezer temperature is high, the compressor is stronger and needs more cooling. Since u made ur design on the operational temperature your condenser will be very small compared to the maximum power of the...

well if u need to design the condenser and evaporator, where do u start? do u design them to work at 80F then see what it will give u at 0F ?

hey all.. what's the difference in designing a refrigeration cycle for air conditioning and for refrigerating? For example: u design an air conditioning cycle to have 80/67 entry conditions with like 45F for evaporating temp, and on the condenser u may try 95F outdoor air, to 125F condensing...

yes load calculation differences! it is an insulated room, unfortunately i don't think its well insulated, but didn't get the chance to test it carefully

If u have to design a room with temperatures between -5 C and 0 Celsius. what differs in the calculations? my guess is that not much differs except the thermostat setting and a machine done to operate at subzero levels....any thoughts?

burner: Danfoss gas burner. The glass eye sensor, uv detector. The burner nozzle is overheating and i have to find why that is the case. I'm thinking of scenarios like: if something is closing on the exit of the burner nozzle, so in a way the flame is hitting solids and returning back to the...

Hey All I'm facing a problem of the sensor inside the gas supply burning out all the time, lasting less than 2 days sometimes. I tried insulation between the burner and the oven walls to decrease the heat returning to the burner. But it seems like something is always going wrong, or my...

true, but u can control those perimiters. like if u want to go for a 5 tons DX cond-evap u can go to a 3/8 coil with less loading on each coil, or a 1/2 coil with more loading on each coil....

What are the comparative advantages/disadvantages of tube diameters in DX systems? like why use 3/8" or 1/2" tubes? Thnx Elie Abou Jaoudeh

>50m DX tubing is a hampering agent and a real issue, it makes the unit lose a lot of its capability. Refrigerant Charge: A LOT Limitations for water cooled DX systems: i'm afraid i never see a limit in it, but don't have enough experience in this subject. Chilled water system : Definitely

wouldn't an internally exposed duct (uninsulated on the inside) create more noise?

when the room has become a mixing box, i think the parameter that will change will be the return air to the coils?

btw..this your posts were by far the most interesting posts i've ever seen on a website..thnx guys really !

i was talking about the compressor efficiency !

AbbyNormal (Mechanical) 5 Jul 07 20:11 install it in Canada. Lool...why u need a new air condition? :D