<html><body><div style="color:#000; background-color:#fff; font-family:Courier New, courier, monaco, monospace, sans-serif;font-size:10pt"><pre class="" style="">Dear Trnsys users,
I`m having trouble with type 511 dry fluid cooler. I want to cool
cooling water coming from type 668 heat pump to a set-point temperature.
To do this I have an equation connected to dry fluid
cooler`s fan control signal to control if the return fluid temperature from the ground is higher than 30 then, the Dry fluid cooler comes on.
The system seems to work quite well with constant ambient temperature
but when dry cooler is connected to the return fluid temperature errors keep coming. </pre><pre class="" style="">the error says the problem is the design parameters of the dry cooler.
<br class="" style=""></pre><pre class="" style="">Those are:
Liquid: 44 C
Fluid flow rate: 6.8 kg/s
Design ambient air: 30 C
Air flow rate: 6.8 kg/s
Rated fan power: 6 kW
I have tried many different design parameters but nothing seems to work.
Does anyone have ideas how I could get my dry cooler to work properly please?
</pre><div class="" style=""><br style="" class=""></div><div class="" style=""><br class="" style=""></div><div class="" style="">Regards,</div><div class="" style="">Metkel</div><div class="" style=""><br class="" style=""></div><div class="" style=""><div class="" style="">Metkel Yebiyo BEng (Hons), MSc<o:p class="" style=""></o:p></div>
<div class="" style="">CEREB PhD Researcher - Ground Source Heat Pumps <o:p class="" style=""></o:p></div>
<div class="" style="">Room T615 <o:p class="" style=""></o:p></div>
<div class="" style="">Department of Urban Engineering <o:p class="" style=""></o:p></div>
<div class="" style="">Faculty of Engineering, Science and the Built Environment<o:p class="" style=""></o:p></div>
<div class="" style="">London South Bank University, <o:p class="" style=""></o:p></div>
<div class="" style="">103 Borough Road,<o:p class="" style=""></o:p></div>
<div class="" style="">London SE1 0AA<o:p class="" style=""></o:p></div>
<div class="" style="">Tel: +44 (0)20 7815 7639<o:p class="" style=""></o:p></div>
<div class="" style="">E: <a href="mailto:yebiyom@lsbu.ac.uk" class="" style="">yebiyom@lsbu.ac.uk</a><o:p class="" style=""></o:p></div></div></div></body></html>