Re: [TRNSYS-users] simulating a PV cold storage with ice storage

[Ben Heymer <BHeymer@ecw.org>]

Johannes,

You are not likely to find a proforma for a cooling device that takes the power (the purchased energy rate) as an input. You could modify an existing proforma or write your own, however I think you might find success by combining different proformas in the right combination.

For example, you could choose a cooling device (such as Type42), a part load curve (such as Type43), and a controller (such as Type22) to adjust the load/control signal for the cooling device such that the purchased power approximately matches the available PV power. Or you could use the cooling device proforma as a way to generate the COP and perform the heat transfer calculations separately in a calculator. It will be important to think about how to make the part load operation realistic (on/off duty cycle, staged compressors, variable speed, etc). 

Good luck.

Ben Heymer, PE
Energy Engineer | Energy Center of Wisconsin | Madison.Chicago.Minneapolis
608.210.7168 Mobile: 312.315.4783 | www.ecw.org

-----Original Message-----
From: trnsys-users-bounces@cae.wisc.edu [mailto:trnsys-users-bounces@cae.wisc.edu] On Behalf Of Johannes Glitzky
Sent: Wednesday, March 27, 2013 2:57 AM
To: trnsys-users@cae.wisc.edu
Subject: [TRNSYS-users] simulating a PV cold storage with ice storage

hey everyone,
I am actually working on a simulation for my bachelor thesis.
I want to simulate a cold storage room (type 19) that gets cooled by a compression cooling system powered directly by PV (type 194).
The storage will be kind of hard to simulate...an ice storage that is either just like the coolpacks in a fridge or a ciruclating water cycle partly able to freeze.
The whole system should also cover a dail ice making.
Both seem to be pretty hard.

What i need help on is the compression cooling system. Which type to use? The stuff i found didnt have an input for the available pv energy. 
Which type can be used.

My idea was to simulate two seperate systems....the cooling load needed by the room and the cooling energy supplied by the cooling system and then compare these in an excel spredsheet.

By the way i am also still looking for  meteonorm weather data for indonesia.

Any help is highly appriciated.
Johannes
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