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07-02-2012, 07:22 PM #1
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reverse cycle water-to-water chiller/ heatpump
Hi everybody
Have anyone operated reverse cycle water-to-water chiller/ heatpump ?? any need any special in operation for them ?
Thanks
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08-02-2012, 05:04 PM #2
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Re: reverse cycle water-to-water chiller/ heatpump
some manufacturers are specialized in this type of chiller. I mean u have to change only water direction, no 4-way valve on ref pipes. But controller must manage outlet chilled water temperature to avoid freezing in both modes, heating and cooling. That's important.
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09-02-2012, 10:31 PM #3
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Re: reverse cycle water-to-water chiller/ heatpump
3-way, 4-way
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10-02-2012, 07:19 AM #4
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Re: reverse cycle water-to-water chiller/ heatpump
Yes, many of them. In Norway and Sweden it's quite common. No specific care is needed. Control is on condenser, and evaporator is only controlled for freezing protection.
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10-02-2012, 03:11 PM #5
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Re: reverse cycle water-to-water chiller/ heatpump
Thanks a lot for the answers. My schematic exactly like the reff three way attachment.
@ AlexG : could you name some manufacturers are specialized in this type of chiller ? I want to check different technical specification.
@All : Have you any documents/recommendation related control multi-chiller plant of this kind chiller especially in control sequence and change-over heating/cooling control ?
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10-02-2012, 04:08 PM #6
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Re: reverse cycle water-to-water chiller/ heatpump
I assume it should be a sealed system due to potential legionella?
Last edited by r.bartlett; 10-02-2012 at 05:37 PM. Reason: fookin spel cheekar
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10-02-2012, 04:55 PM #7
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Re: reverse cycle water-to-water chiller/ heatpump
WTA, check websites of Climaveneta or CIAT. I suppose that Carrier or York make this type of units. What is your e-mail?
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11-02-2012, 01:01 PM #8
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Re: reverse cycle water-to-water chiller/ heatpump
we use closed-loop with chiller and dry cooler. Many manufacture have this kind of system but cause rarely use in our location ( we are the first) the information about control, operation is uncleared with us.
Originally Posted by r.bartlett
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11-02-2012, 01:39 PM #9
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Re: reverse cycle water-to-water chiller/ heatpump
we use closed-loop with chiller and dry cooler. Many manufacture have this kind of system but cause rarely use in our location ( we are the first) the information about control, operation is uncleared with us. Originally Posted by r.bartlett
@alexG : Please check the PM
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11-02-2012, 05:51 PM #10
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Re: reverse cycle water-to-water chiller/ heatpump
wta, why dont u use air-to-water heat pumpes? High humidity?
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20-02-2012, 02:11 PM #11
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Re: reverse cycle water-to-water chiller/ heatpump
Becausa architect and acoustic restriction. dry cooler and water-cooled chiller is only variant
