From the breakdowns of what I have seen of dehumidifier, they are absent a filter drier. A/C units have a filter drier and the dehumidifier does not. Also the location of the of the evap and condenser. The cool air of the evap moves through condenser vs the cool air moving into a conditioned environment and the condenser hot air being rejected into the outside air. Im assuming it is this location that prevents the captured humidity from freezing to the evap coil. The heat from the condenser is passed to the evap and causes the humidity to stay in liquid form. This is what prevents the need of a defrost element. I dont know what the critical charge of these systems are nor am I very familiar with them. I do work on residential refrigerators. So I do have some knowledge the process of refrigeration.
Dear David, thank you for your comment. You are correct, the fundamental principle of an AC and a dehumidifier are the same. Both of them uses a vapor compression refrigeration cycle. The main difference is the location of the evaporator and the condenser and how the air is moved. For a dehumidifier, both of them are inside the house. For an AC, the condenser is outside. Because of the difference in function, the temperature of the evaporator and condenser will be different for AC and dehumidifier as well. For example, in the case of the condenser in a dehumidifier, the heat will only need to be removed indoor, so the condenser temperature only needs to be higher than room temperature. But for AC, the condenser temperature will depend on the outside air temperature - the hotter the ambient is, the harder the AC needs to work.
A heat pump and a refrigeration unit have the same mechanism. An air-conditioner/dehumidifier/refrigerator uses the cold side of the refrigeration cycle. A heat pump uses the hot side. In some sense, they basically move heat from one side to another side
@@denisywyu7864 Thank you for an interesting video! I bought a dehumidifier primarily to… dehumidify… But I also reckon it will help to heat my house, as the COP is around 3. Even though the cooling and heating part is indoor. condensating vapour releases quite a lot of energy, the opposite of boiling water, where you put energy into the water to convert to vapour. Am I thinking correctly here, and do I get somewhere in the range 3 times the energy out of the machine as a byproduct?
@@bernardopedal7638 Hi Bernard, in general if you run a dehumidifier, the room temperature will go up. The simplest way to think about it is that the entire system is inside the room, but you are applying an extra power to run the compressor. That energy is basically converted to heat and so your room temperature should increases. Though, I don't think you get 3 times the heat though. The cooling capacity is 3 times, where the energy is taken out of the condensed water, but the extra applied energy is still that of the compressor.
Thanks Denis very informative
very well explanation mate..thank you.i have just bought today 20L/Day capacity. it consume 0.263 w/h.
Good explanation 🙏🏽👍🏽
你的影片做得很讚！
🇹🇼 ❤️ 🇭🇰
The main difference is the size of the condensing unit. Scale it up to much and you only get cold air, without noticeable condensation.
From the breakdowns of what I have seen of dehumidifier, they are absent a filter drier. A/C units have a filter drier and the dehumidifier does not. Also the location of the of the evap and condenser. The cool air of the evap moves through condenser vs the cool air moving into a conditioned environment and the condenser hot air being rejected into the outside air. Im assuming it is this location that prevents the captured humidity from freezing to the evap coil. The heat from the condenser is passed to the evap and causes the humidity to stay in liquid form. This is what prevents the need of a defrost element. I dont know what the critical charge of these systems are nor am I very familiar with them. I do work on residential refrigerators. So I do have some knowledge the process of refrigeration.
Dear David, thank you for your comment. You are correct, the fundamental principle of an AC and a dehumidifier are the same. Both of them uses a vapor compression refrigeration cycle. The main difference is the location of the evaporator and the condenser and how the air is moved. For a dehumidifier, both of them are inside the house. For an AC, the condenser is outside. Because of the difference in function, the temperature of the evaporator and condenser will be different for AC and dehumidifier as well. For example, in the case of the condenser in a dehumidifier, the heat will only need to be removed indoor, so the condenser temperature only needs to be higher than room temperature. But for AC, the condenser temperature will depend on the outside air temperature - the hotter the ambient is, the harder the AC needs to work.
Wait it's just a heat pump?
Wow there are heatpumps everywhere these days.
A heat pump and a refrigeration unit have the same mechanism. An air-conditioner/dehumidifier/refrigerator uses the cold side of the refrigeration cycle. A heat pump uses the hot side. In some sense, they basically move heat from one side to another side
@@denisywyu7864 Thank you for an interesting video! I bought a dehumidifier primarily to… dehumidify… But I also reckon it will help to heat my house, as the COP is around 3. Even though the cooling and heating part is indoor. condensating vapour releases quite a lot of energy, the opposite of boiling water, where you put energy into the water to convert to vapour. Am I thinking correctly here, and do I get somewhere in the range 3 times the energy out of the machine as a byproduct?
@@bernardopedal7638 Hi Bernard, in general if you run a dehumidifier, the room temperature will go up. The simplest way to think about it is that the entire system is inside the room, but you are applying an extra power to run the compressor. That energy is basically converted to heat and so your room temperature should increases. Though, I don't think you get 3 times the heat though. The cooling capacity is 3 times, where the energy is taken out of the condensed water, but the extra applied energy is still that of the compressor.