PeterDrawa
13-02-2013, 12:06 PM
Hello,
I would greatly appreciate any comments on the following issue:
I am trying to reduce forced convection within a climatic chamber which is used in testing electronic devices. My additional problem is a large temperature gradient within the chamber volume.
The chamber operates within 0 deg. to +50 deg. C range and is built around three air blowers that pump air into its volume via two 100mm by 750 mm inlets (please see fig 1.). Two temperature sensors are positioned right next to the chamber outlets (X = 500mm; Y = 740mm; Z1 = 0mm and Z2 = 750mm) to monitor the inside volume temperature.
10059
Figure 1 - Climate chamber
Air-speed for the two inlets is about 1.5-3 m/s, but there is a clear non-uniformity of the flow. (Please see fig. 2). To my understanding this is the main cause of temperature gradient within the chamber volume (see fig 3.), which I would hope to reduce.
10060
Figure 2
10061
Figure 3
Am I correct in thinking that I could reduce the temperature gradient within the chamber's volume by applying extra baffles to the inlets? My idea is to force the air to reach the bottom surface of the climatic chamber, before it has a chance to escape via the outlets.
Thank you very much for any comments or suggestions.
Peter Drawa
I would greatly appreciate any comments on the following issue:
I am trying to reduce forced convection within a climatic chamber which is used in testing electronic devices. My additional problem is a large temperature gradient within the chamber volume.
The chamber operates within 0 deg. to +50 deg. C range and is built around three air blowers that pump air into its volume via two 100mm by 750 mm inlets (please see fig 1.). Two temperature sensors are positioned right next to the chamber outlets (X = 500mm; Y = 740mm; Z1 = 0mm and Z2 = 750mm) to monitor the inside volume temperature.
10059
Figure 1 - Climate chamber
Air-speed for the two inlets is about 1.5-3 m/s, but there is a clear non-uniformity of the flow. (Please see fig. 2). To my understanding this is the main cause of temperature gradient within the chamber volume (see fig 3.), which I would hope to reduce.
10060
Figure 2
10061
Figure 3
Am I correct in thinking that I could reduce the temperature gradient within the chamber's volume by applying extra baffles to the inlets? My idea is to force the air to reach the bottom surface of the climatic chamber, before it has a chance to escape via the outlets.
Thank you very much for any comments or suggestions.
Peter Drawa