Enhanced cooling system, containing solar and photovoltaic panels as well: 1. take outside hot and humid air 2. dry it with dehumidifying brine (i.e., calcium-chloride) - this will increase the temperature of the air 3. cool it down to outside temperature by heat exchanging with exhausted outside humid air 4. humidify dry cooled air to cool it down further - now we have cool and humid outside air 5. take inside hot air and dry it with dehumidifying brine - this will increase the temperature of the air as well 6. cool it down by heat exchanging with cool and humid outside air that would become exhausted humid air (inside and outside air should not mix) 7. humidify dry cooled inside air to cool it down further - now we have cool and humid air to return to the inside space 8. route the dehumidifying brine into the solar panel to heat it up and remove excess water from it 9. cool the brine using part od the outside hot and humid air 10. use photovoltaic panels to produce electricity to run fans and pumps How you'll have a decent air conditioner using zero grid energy, but only when sun is shining (which is when cooling is mostly needed). For cooling during cloudy weather or night time electric or gas heating is required, which is less efficient than a heat pump (i.e. air conditioner).
I can picture this also being used to heat homes during winter. But beware of pipes & equipment being damaged if the water is ever allowed to become ice. The expansion of ice, can even rip metal. This is why car cooling systems need antifreeze.
If those coils are placed on the ceiling or on the wall then water droplets will drop all over the room. If we decide to cover the roof with something then this cooling will be less effective. If coils are on the floor then also we have to cover them, otherwise we won't be able to walk.
I show symptoms of sick-building syndrome when I'm in a car with the AC on or in an Air conditioned room. I feel dryness of nose and mouth, have to cover my self with a shawl as the cold air is too discomforting. Body tends to shrink, I also experience shortness of breath, I have to remind myself to take deep breaths but as I do that, it is extremely discomforting for my nostrils and lungs.
I don't get why the radiant heat exchange loops have all those 90° bends. Wouldn't it make much more sense to have a bunch of coiled loops to maximize coolant flow? Otherwise, you're going to have immense head pressure.
There are 3 types of evaporative cooling: direct, indirect and regenerative indirect dew-point evaporative cooling. Here is a channel for dew-point indirect evaporative cooling called Maisotsenko Cycle, M--Cycle. ru-vid.com/show-UC84rEUQq5f1wtREqNE6G3aQ
Why radiant cooling is advertised to take care of ALL indoor air problems, including ventilation and air quality? It does nothing to ventilation, only to temperature. You can still have stifled air if your windows are closed with such setup.
The same as floor heating I would suspect. However A radiant barrier in combination with the radiant cooling would probably be a legendary cooling system for hot climates!
This has very low COP vs Heat Pumps. We should pair Heat Pump ODU heatpipe and put into the ground in a large circuit. This could utilize Geothermal heat exchange and will give max SEER and COPs than any system in the world! SEERs of 25+ can be achieved pretty easily. As Ground always has 5-10* temperature difference than air load will be very less.
Thanks for the detailed explanation. I would like to know if its good to use part of return air (75 F) is mixed with outdoor temp (around 108 F) resulting to a lower temp 80-85 F and wil undergoes indirect evaporation system
THANK YOU, this has been very informative. My one query do we need to install only one kind of system on the ceiling and or it can be installed either on floor / wall / ceiling? How do we decide the module, what is the calculation used here, asking out of curiosity.
It's similar to floor heating, but on the ceiling. Remember if your water is cooled to 20C and the room is 30C, then the radiant heat is lower effectively cooling objects in the room that have high emissivity.
You could dig shallow Wells where the temperature is 9 to 14 degrees c. A simple pex loop in the floor could result in a 5 to 7 degree lower room temp.
