05-13-14, 07:28 PM | #1 |
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Heat Pump Plumbing Best Practices, pics
Looking for pictures of Best Practices Plumbing of Heat Pump Internals.
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05-23-14, 06:15 PM | #2 |
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Is it OK to position flat plate HX condenser flat horizontal?
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05-24-14, 01:12 PM | #3 |
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Not unless you want your hx to be full of oil.
Last edited by jeff5may; 05-24-14 at 01:23 PM.. |
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05-24-14, 03:16 PM | #4 |
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Plate exchangers should be mounted so the liquid side faces down and water (or other secondary fluid) flow is opposite refrigerant flow. The small connection is for the liquid line.
On the evaporator, the small connection is the liquid inlet. As such, the water flow should actually be opposite to what is drawn. (The drawn flows are for using it as a condenser.) Mount all the refrigerant parts to the base plate (recommended to have it on wheels for easy movement) before you braze it together. That avoids unnecessary stress on the joints.
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05-24-14, 05:10 PM | #5 |
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Does the little Desuperheater HX need to be above the condenser & drain into top of condenser? (enclosure would be quite tall)
OR Can Desuperheater be next to condenser & have it's output (bottom) pipe routed upward to input (top) of condenser? |
05-24-14, 05:25 PM | #6 |
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The desuperheater can be mounted in any position, but it doesn't hurt to keep the outlet near the bottom.
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05-25-14, 04:46 PM | #7 |
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I copied this from a place selling desuperheaters, is this true, or just sales hype?
"Due to increased condensing area now available to the refrigerant gas, the discharge pressure after the compressor gets reduced. This would result in about 5% savings of Power consumed by the compressor motors. Additionally, the liquid coming out of condenser gets sub- cooled. Every 2° C drop in the liquid temperature increases the system COP by 5 % i. e. , it reduces the power consumption relatively." |
05-25-14, 11:38 PM | #8 |
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It's equivalent to oversizing the condenser. When the condenser is already oversized, the power use and optimum subcooling won't change much, but the desuperheater will give you a small amount of hotter water along with a large amount of hot water, meaning better overall efficiency.
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