Home |
Search |
Today's Posts |
|
UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to uk.d-i-y
|
|||
|
|||
DIY Heat Bank: PHE specifications
I am shortly going to convert my conventional open vented DHW cylinder
into a Heat Bank following the design given at http://wiki.diyfaq.org.uk/index.php?title=DIY_Heat_Bank I am going to set the post-PHE TMV to distribute DHW at 55degC. What I need to know is how I go about determining the required PHE secondary output temperature. Say the PHE output is designed to be 60degC. If one shower is running, for example, the TMV will blend a little cold water to achieve 55degC. That's easy. What I'm finding difficult is how to be sure what happens when the 2nd shower is switched on, and then perhaps the kitchen hot tap... I have a very good supply from the rising main. It runs at ~8bar (reduced to 5bar by a pressure reducing valve at entry into the house) and delivers 30l/min at 8bar. When additional outlets ae opened, will the secondary output temperature will drop as the flow rate through the PHE increases? Or perhaps it won't... perhaps the flow rate to each outlet will drop... and the temp will stay the same...? Basically what I don't quite understand is the dynamics between water pressure, flow rate and number of outlets open. Many thanks in advance for any info on this. Mike |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Heat bank for under a kitchen worktop | UK diy | |||
Home made Heat Bank | UK diy | |||
Heat bank and UFH | UK diy | |||
Heat Bank - space heating or not ? | UK diy | |||
DPS Pandora heat bank | UK diy |