GammaGlobulin

VERY good point....!!! I think the Panasonic model which I showed earlier in this topic provides this function. Yes, and of course. This is why it is beneficial to select a brand and model of AC which is designed to work flawlessly in climate conditions typical of Thailand...maybe? AND....TKS!!! I consider this Topic to be rather important for most readers in Thailand, meaning just the general topic of ACs, and AC-usage failures and problems.

PhDs payback to society, to America, FAR more than we invest in them. If you do not understand how this works...then.... No further meaningful discussion can be possible. Of course, I prefer the Natural Sciences. And, even grad-research in medicine. If a grad student wants to be funded for pursing a PhD in lip-reading, then OK, I would not fund them. However, funding super-smart students towards helping them to pursue degrees which are so obviously beneficial to society as a whole.... One would be CRAZY to oppose such a concept. I know you are NOT crazy.... Correct?

In addition, I would like to offer up an informal EXPERIMENT that just might settle this question of... High room humidity as the prime causal factor leading to freezing of the evaporator coil: a. Will this happen on a decent machine, such as a Panasonic AC? b. Or, even with water vapor being added to the room, at a very high rate, will this NOT happen with a decent properly designed and operating AC? My test method will be to take TWO 1,800-watt water kettles, and open the lids, after filling them full. Then, I will plug them in, and let them rip. Both kettles, 1.5 liters each, should be able to boil off 2-liters of water in about 30 minutes, give or take a few minutes. This will DOUBLE the amount of water vapor being evaporated from the OP, during his strenuous exercise routine. The OP's exercise room is only slightly smaller than my bedroom, according to what the OP has reported here on this Topic. So then... IF I add TWICE the amount of water vapor to the room, in HALF the time, and set my Panasonic AC to....16-degrees C.... And, IF I keep the thermostat of the Panasonic machine set at 16-degrees C..... 1. Will the room temperature stay around 21-degrees C...even though I will be adding about 3000-watts of heat from 2-kettles to the room? 2. How will the RH change? 3. Will the Panasonic AC ice up? 4. Will I trip the CB? (no, this cannot happen with the electrical wiring, so no worries here) So, I figure this is the least I can do in the interest of furthering better understanding of what is really happening with the OP's TCL AC. This might take a day or two, to set up this trial...and so... Please stay tuned. And, hope this might help, in some small way. NOTE: This is a very interesting Topic, because, here in Thailand, who is not interested in ACs, AC failures, and AC brands....? NOTE2: Although I will be conducting this experiment in my bedroom, which is now quite well sealed and protected as much as possible from drafts from outside the room... meaning I will be boiling off the water in two water kettles...STILL...I have no intention of.... doing any WELDING in my bedroom.

So, YOU, say, Sir. But, I, for one, very much disagree....(haha, but serious, too).... Anyway, I would like to share with you an anecdote of an AC-problem time, back in 2001, just at the same time the NYC towers were hit, on 9/11. And, this is not a joke comment.... So what happened was, I tried to save money by buying a cheap AC for the bedroom of my house in Taipei, situated on one of the most exclusive mountain housing developments, HuaYuan XinCheng, fully of million dollar houses. a. I purchased a Samsung 9000BTU split-air wall unit, which was cheap as heck. A ridiculously- low price. b. I Turned it on, and used it for a few days. c. Although it was summer in Taiwan, and the weather was nothing out of the ordinary for that climate...the Samsung machine began to freeze up several times a day. d. I fiddled with the settings, to no avail. Ice, ice, and more ice, on the evaporator coil. e. I called Samsung in, and they checked it, but could not solve the icing problem. f. Long story short, I told Samsung Taiwan to take back their machine. g. I bought a Panasonic 12,000BTU unit for the same room. h. The Panasonic machine was heavenly. The temperature control, and the room temp variability on any given temp setting, was only about plus/minus 0.5-degrees C. i. Since that time, I have learned to always buy the best. For me, the best is Panasonic. I would buy a Hitachi, maybe, but I don't have any experience using this brand. j. Are machines supplied by Panasonic to the local market as good as Panasonic which were supplied to the Japan and Taiwan market 25 years ago? I will not say here. k. However, what I am saying is that I STILL believe, even though there are those here who completely deride my opinion, that the base cause of icing on your TCL machines is a problem with gas pressure being not right, as has already been mentioned many times. The problem is that the evaporator coil should never get down to 0-degrees C, or it will, inevitably, begin to ice up, no matter WHAT the room's RH might be. I know that readers here do not agree with me. However this is my experience. Also, with older machines, when they begin to lose gas pressure due to very slow leaks: a. They will freeze up. b. They will also freeze up even if the DRY-MODE is selected. I am only reporting what I know from experience. More importantly, I know just how frustrating and exasperating it can be when an AC ices up intermittently. And, for sure, you deserve to have an exercise room in which you can exercise in peace, WITHOUT being plagued by AC problems. What you need is to have a room where the RH is around 55% or lower, and where the temp is about 23-degrees C. If you can achieve these conditions, then water/sweat will evaporate more rapidly, and this will go a long way to giving you a better workout, without overheating. ============== Some of the installers here say the TCL machines are good. I would not know. I have never used one.

I have noticed that there seems to be a bit of confusion concerning: What volume of liquid water would need to be removed from room air in order to achieve any given drop in Relative Humidity, either at the same room temperature, or at two different temperatures. This is easy to calculate, of course. If I were to do this, then I would just calculate the mass of water vapor in the room, at 25-degrees C, and RH of whatever it might be, say 80% RH, the hypothetical starting point. Then I would subtract the mass of water vapor in the room, at 20-degrees C, and RH of 50%, the hypothetical desired RH and temperature. So then, given these conditions: Just what volume (minimum) of liquid water must be removed to achieve these results? Of course, this would be a minimum, since we can expect quite a bit of water vapor from outside the room to enter, continuously. Therefore: What would you say is the MINIMUM volume of liquid water which must be extracted in this scenario? Anyone wish to hazard an EDUCATED guess? This value is actually important to know, when selecting an AC. In addition: For some UNFATHOMABLE reason, especially in Thailand, it seems that sales people are underestimating the size and cooling capacity of ACs, for use in any given room volume. Why is this? IDK. However, in order to avoid such a calamity happening to YOU, then I would suggest buying ACs as I do. My bedroom, small I would say, has a volume of approximately 60 cubic meters, and if you also add in the bathroom, then probably around 65 cubic meters, give or take. Since I do not have much sun exposure, most of the time, and since the walls and ceiling is not well-insulated... I chose a 24,000BTU AC unit for this room. Was this a good choice? YES....!!! Why? Because I chose an inverter AC which is able to supply a range of (BTU) cooling, from about 7000BTU up to 24,000BTU, depending on conditions. And.... Also, since this is an inverter, the compressor will run almost continuously, which will provide excellent dehumidification during ALL 3 Seasons in Thailand. I realize that there are those on this Topic, and also on the Forum, who believe I don't know anything about ACs.... And, I do not blame them, because...so very often...I sound like a complete... FOOL. And, I like it like this. This is the way it should be... For me....IF... I really want to enjoy my life in Thailand. But still, when actually BUYING ACs here in Thailand, it is always best NOT to be perceived as a fool. And, also, one should not ACT the fool when making AC purchases, because... Bad results can be the result of one's folly. ================== Now, finally, let us please return to the simple absolute humidity calculation question that I posed above: This is important, and one should know how to estimate these values. Some here, obviously, have WAY underestimated the water vapor content of room air, and how much needs to be removed in order to end up with a more ... Comfortable living environment. And thus, I ask you: Can you provide the correct volume of water which must be removed in the above example? And, what is your preferred way to calculate this value? ======================= Before closing this single comment, I would like to wish everyone.... HAPPY HYDRATING, while exercising in this heat... Especially since we are now in the HOT Season, in Thailand.

Why don't you just HEAD FOR MIAMI, and find out for yourself? OR...even better.... Head for IMMOKALEE, FL.....

That's GOOD! Reason: I definitely IDENTIFY as Chinese even though I might be white, a roundeye, born in New England and raised just outside Philly, home of the CHEESESTEAK. So, I like to see Chinese produce great products. I fear that Japan is on the downhill, these days, especially in consumer appliance manufacture. I LIKE to buy Chinese products, especially if the Chinese products are not destined and designed for the cheap American Importers.

One reason for this RH difference, in all likelihood, is the temperature difference between inside and outside, if you keep your windows open. If windows are closed, then this difference might be due to the cold morning air in the house, gradually warming throughout the day, as the house heats up, And if the windows are shut, then the RH will decrease as the air inside the house increases in temperature.

Go ahead and laugh, then, if you will. But, you are still wrong, and I, Sir, am RIGHT! The above are the results for a 24,000BTU AC running for 15 minutes at HIGHEST Fan setting, and LOWEST Thermostat setting (16-degrees C). The bedroom room size is approximately 5 meters x 4 meters. No air leakage through windows which have been boarded up and sealed. (Of course, there is still leakage of air, to some degree, and this is why it is impossible to achieve 30% RH in-room, with an outdoor RH of 64%. It would be IMPOSSIBLE to reduce the in-room RH to 30%, given these conditions. The outdoor RH is just too high.... After all, my bedroom is neither a closed system, nor an isolated system. Did you think that I thought it might be????? How, ODD.) Note: Of course, I always use TWO XiaoMi Air Purifiers, running 24/7. Both purifiers are in the same bedroom. And, the readings on both machines are consistent with each other. This is the machine being used.

No it won't. There is much air leakage in any normal room. The AC, will continue to extract water from the air, during the full hour of the test. The purpose of the test is just to get some idea of approximately how much water is being extracted from the air over an hour period of time. Also, more than an hour will be required to extract enough water to reach an RH of 30%, which is something IMPOSSIBLE with an AC, if the outside RH is about 80, or so. And, before you are too hasty to reply, you have no evidence to show that what you have just stated is....TRUE. In fact, it is false, IMHO. How do I know? Because... I have the EVIDENCE....of course....!!!!

Of course, one more thing, and there is always "one more thing": You should turn-on your AC about 30 minutes before you intend to use the treadmill. Set the AC thermostat at the lowest setting (probably 16-degrees C) and highest fan speed. This will lower the room temperature as much as possible. Then, as you exercise, and as you say, the room temperature will rise. As the air temperature rises, the RH in the room will decrease, commensurately. I am sure you already know the relationship between air temperature and RH, but for those who don't here is the relationship.. The inverse relationship between RH and temp is... This is why it would be useful to cool the room down to lowest possible temp before exercising, and then let the temp rise which will dramatically lower the RH, even though it will not lower the absolute humidity....obviously.

Don't worry about the cold front, something that I am aware is now approaching, and here already, actually. Anyway, in fact, you CAN test during the cold front. All you need is a small space heater. Before you begin this test, measure the humidity in the room. a. Set the heater to about 1200 watts of heat, and place in your exercise room. b. Turn on your AC, and set the thermostat to 16-degrees C. c. This will cause your AC's compressor to begin operating continuously, and at FULL Power. d. IF your AC is functioning properly, and if the gas pressures are as stipulated by the manufacturer...then.... This will cause your AC to immediately begin condensing the water vapor in the exercise room. e. If you want to check the output of your AC (how much water is being removed per hour), then just go outside and put a container under the drain pipe from the evaporator. You should place the container under the outlet of the drain pipe (hose) from the evaporator at the time that your AC is switched on. And, you should measure the amount of water which drains from the hose for the FIRST full hour. f. Next, after the first hour has elapsed and you have measured the amount of water which has condensed, then record the humidity, and turn off the heater. f. Don't turn off the AC, yet...of course. g. Wait, and after the room temperature returns to about 20-degrees C, then record the humidity, once again. g. Turn off AC....if you want...It's OK, now... Yes, I am the RAMBLER, as you say. The Stones even wrote a great song about me,... When I met them, back in the day. Crucial and IMPORTANT Note to ensure success of this test: IF you sweat as much as you say you do, which I very much DOUBT, then, please, for mercy's sake, DO NOT exercise on your treadmill during this test, which would compromise the validity of this test. Just leave the room. And keep all doors and windows tightly shut. Thank you!

a. I like a very DARK bedroom for sleeping. b. I don't like dust in my bedroom. The bedroom windows are now completely sealed, which helps much with the reduction of dust infiltrating inside. c. You are correct about walking outdoors. Fortunately, I do have very nice areas to walk, with few cars, no roosters, and only friendly dogs. c2. But, I am lazy by nature. Overcoming inertia to return to daily walking is not so easy, or not until the time that one returns to the daily habit of walking. c3. Once out and about, of course, then the positive vibes of the flora and fauna immediately reinforces one. c4. The main problem, though, is that I live inside a very nice compound with birds, some mango trees, and plenty of myna birds. And, I find it difficult to leave this idyllic gilded cage.

It's just plain WRONG to hurt defenseless grad students.

I agree with you. This is just plain...WRONG: https://www.nature.com/articles/d41586-025-00812-x

I just hope everyone stops using USA GPS. Use the Chinese GPS, instead ....it's better. BOYCOTT US Department of Defense's GPS. Put your money where your mouths are.... Why don't you?

My GREATEST HOPE AND WISH is the the ENTIRE WORLD will..... BOYCOTT APPLE PRODUCTS OF EVERY KIND...!!!! Hate Apple. Gives the USA a very bad name. So, YES...Please.... BOYCOTT APPLE.... Garbage Apple is full of Control Freaks. Hate this company... BIG TIME

Where were your dental implants made, if you have them? What about dental tools used by your dentist? Will you tell your dentist that you will allow her to use ONLY tools not manufactured in the USA? What about if there was a medical prosthesis that would save your life? But then, you realized that it was manufactured in the USA...would you... REFUSE IT?

You would have done MUCH better to choose TWO AC machines of smaller size, rather than one much larger unit. Again, the reason for this is increased energy efficiency. Just my two cents, and also another valid point of mine.

Another ridiculous assumption I use my workshop I am happy to here this, at least.

It is not only the volume or sound level that is important. One other crucial factor is the controlability of the noise. Noise that cannot be escaped/avoided, or is unexpected, or random, causes more stress to the individual. One wonders if the true impact of increasing noise intrusion into our lives has yet been well understood. Perhaps, without the noise, even metrics such as levels of immune-system response might be far higher. If constant noise, and increased noise, and random noise does cause a depressed immune-system response..then... My next question is whether there is any correlation between living in a very noisy environment and cancer rates.... heart disease, etc. For sure there is a correlation between noise and certain apparent learning disabilities. Further investigation is needed.

This is why I stay inside my house with the ACs going 24/7, and rarely leave my compound, which I keep free of debris. I have no need for window screens, just because I never open my windows. Also, my bedroom window is completely boarded up and sealed against the dust here, with PM2.5 rising at the moment. I have no problems with mosquitoes invading my house.. If I wish to sit outside on my veranda, I just use a couple of fans. The increase airflow prevents mosquitoes from landing. These bugs can't land in wind.

You mean you weld in your bedroom?

Well, I would make the observation that the AC you are using is WAY oversized or extremely inefficient. With less than 2000 watts, going full blast, my AC has an output of 24,000 BTU. I would suggest you check the specs on your AC and report back to us. The SEER rating on the machine I chose is over 23. Better check. ============== For Thailand's climate, the AC is better, at least for my needs. I maintain the indoor temperature at about 21-degrees C, throughout the year. ============== Having a dehumidifier cycling on and off would drive me crazy. But then, it probably does not require much to drive me over the edge.

Rarely. And with good reason. Who's to say that I might not also meet up with some crazy Iranian wielding a syringe?