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I had good luck with SimScale. The value is in their engineering assistance. With the paid subscription they will basically hold your hand through the beginning of the project, and as you get better at it they will log in and look at your model if you get stuck on something. You can fiddle...

A small brazed plate work work easily.

A hot gas bypass valve (regulator) is a pressure actuated valve that is connected to the discharge of the compressor (valve inlet) and to the suction side of the system. It can be hooked directly to the suction or in between the expansion valve and DX distributor. There are special distributors...

I used to buy them for our MRI chillers that were going to areas such as Las Vegas, Phoenix, etc. We never took real data as to performance gains, but they ran when it was 120 F on the roof. Some guy in AZ built them for us but can't remember his name (I don't work for that company anymore)...

It is a hot gas bypass valve and a desuperheating expansion valve connected toghether via a "desuperheating chamber." You could do the same thing with installing the parts separately. I think it is marketed to HVAC applications because in a refrigeration system there is a good chance the system...

Heatcarft Enginering Manual. http://www.heatcraftrpd.com/service/handbooks.asp

Sure, it will work. However, as posted, you won't get full modulation because you are only controlling on/off devices, but you will remove the offset like with a standard differential control. Check out www.kele.com. They have this nifty contoller that will hook up to the output of a process...

I am having some problems with the automatic pipe fitting placement feature with the pipe routing command. I took the standard ANSI butt weld 1" elbow, created a copy, and added it to the library. I then adusted the dimensions to create 4" elbow. Using the database administrator I updated...

Hanson Tank Cemline Wessels.

DOes anyone know of a manufacturer of chilled water storage tanks that specializes in HVAC applications. This is for a 120 ton Trane screw chiller with a short loop. Looking for around 700 gallons. Does the tank have to be rated to 125 or 150 psi, even if the system pressure will never be over...

If you are looking for a completely packaged unit, that all you have to do is hookup power and water pipes, you need to look at a process chiller. Carrier Aquasnap as Chris mentioned is a good chiller for the price, but the smallest is 10 tons. Process chiller guys make totally packaged systems...

I hope I can explain this without pictures. Assuming a vertical accumulator... There are two connections, the inlet and the outlet. The inlet connection extend into the inside of the accummulator a couple of inches, then just ends. The outlet connection extends into the accumulator all way to...

Sure it will work! But... *You will have less capacity than you did before. *Need more refrigerant *Need to run power to the condenser. *Need considerations for head pressure control depending on where you are. If this is something you are doing yourself, it will be cheaper than a new...

For this low of temperature you need the following: 1. Condenser flooding head pressure control. It is the only thing that will work. Sometimes called a "Headmaster" after the brand name of the valve by Alco controls. 2.Heated, insulated receiver. You will HAVE to have a receiver with the...

Climate master Florida Heat Pump plus others stated above. Or you can call me, I'll build you one. I'm in Southwest Idaho (Parma). Clyde

What if you used the weight of the falling car as your pump driver? Let's say a second shaft was installed parallel to the main shaft. The second shaft would just act like a large piston pump. You of course could not pump water at a constant rate, but the you would be burning up the braking...

Hey tygerdawg, What was your experience getting hooked up with NASE? When I left my company I was trying to go independent of COBRA. I looked into NASE, seemed like good coverage for a good price, but kind of confusing because of all of the optional riders I had to buy (kids, maternity, etc.)...

Keep in mind that the temp comparison will not be between 38 and 52. SInce you are proposing pumping the 52F well water into a heat exchanger, the water on the fan coil side of the heat exchanger will be XYZ temp above the well water temp. Something like 5-10 F. So the comparision is between...

I am looking for some info on microturbines: 1. I am trying to make hot water or steam from the hot exhaust. I think the term is a recuperator. Turbine size is 400kw. I know Capstone makes their own for the 60 kw system, but I need to come up with an mfg independent of the Turbine manufacturer...

Depending on what you are trying to do, ASAE (American Society of Agircultural Engineers) may have something. They deal a lot with crop drying and composting. ASHRAE Refrigeration is probably your best bet though. Clyde