I have designed a tromb wall for a single room.The outside temperature is very high thus the air coming from window has very high temperature and the person inside is feeling uncomfortable (when I check the PMV in CFD).how the air can be cooled?? give suggestions
The schematic diagram of the room looks like as it is attached here
The only way to reduce air temperature is by cooling. it is either sensible or pejorative cooling. the cheapest for your situation is evaporative cooling. using evaporative cooling pads will reduce the incoming air temperature to close of its wet Bulb temperature. I have done a trail by using to stage air cooling in Summer temperature was around 48 C we got 23 C to the shed. it is using sub soil temperature which is cooler in summer than surface temperature, this was sensible cooling. the second stage is evaporative cooling, by entering the air already reduced temperature to Evaporative cooler and reduce it further EC. this system could be used in winter to preheat incoming air in cool places.
Hi Farah Naz
Trombe wall only serves as a driving engine, which circulates the air and cannot provide any cooling by itself. For cooling purpose by Tromb wall, need to that the incoming air to the desired space, to be cooler than the air of the space. for this purpose, it is necessary that, the air from the outside into space, can pass from an environment with low temperature (such as a shaded area, a courtyard, sunken garden, Cellar, etc) or through a passive evaporative cooling system (such as passing air over a pond, etc.) and then enter the desired space.
Thus, the amount of cooling that can be achieved in this way, depends on the rate of ACH provided from the Tromb wall and the temperature difference between the two space.
In general, I think the modelling of only one room can not answer your question.
Regards
Alipour
A ) Generally Cold air Enter inside bottom, Hot air can go out by top vent but your Diagram shows it's not comfortable Design . If you are providing bottom vent and top vent for AIR Enter & Exit .Could not feel much heat. Also provide air shutter.
B ) In this type of area must can provide Cavity Wall in Outer sides. can plan before Construction of Building.
In Another alternative for single Building could be provided Filter Type Bamboo Window Curtain Can make to prevent hot air Enter inside through the window .
Open an air-inlet in the opossite side of the wall. As low as possible. Even an underground channel would refresh your incoming air. Also an opening on the roof would let hot air come out easier.
The only way to reduce air temperature is by cooling. it is either sensible or pejorative cooling. the cheapest for your situation is evaporative cooling. using evaporative cooling pads will reduce the incoming air temperature to close of its wet Bulb temperature. I have done a trail by using to stage air cooling in Summer temperature was around 48 C we got 23 C to the shed. it is using sub soil temperature which is cooler in summer than surface temperature, this was sensible cooling. the second stage is evaporative cooling, by entering the air already reduced temperature to Evaporative cooler and reduce it further EC. this system could be used in winter to preheat incoming air in cool places.
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