The key to a long life is not dying. (*groan*)
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Hi again.I'll try and get it done but I'm off to the big city tomorrow and I know I won't be writing much here for at least a day.I'm really sorry but I'm not going to get this done any time soon.
I'm already on pages of work. Therefore no-one will want to read it, not even @chiralSPO .
I do not have the time to complete. I'm way behind on several other important tasks. The whole thing is now begining to cause me some stress and that's not how a forum should be.
I'm very sorry @chiralSPO but you should not wait for a detailed response from me, it would safer to assume it won't happen.
Apologies, Eternal Student.
Why oh why do some people struggle to define what a woman is ?
Just stick with the XX chromosomes. The reproductive bits don't always work and are sometimes removed if they go very wrong, but every cell of a woman's body contains two X chromosomes and every adult member of homo sapiens with two X chromosomes is a woman.
Could you clarify this please? I'm not sure what your ΔG is, is it actually ΔG° ? Are [Z] and [A] concentrations at equillibirum only? i.d.k.
I understand the original idea as using an arbitrarily large quantity of phase change material to store energy and release it only at a transition temperature. I see no problem in principle other than the vast quantity of material needed. If going for a chemical change process things become more difficult as a lot of processes that are thermodynamically favourable do not proceed for kinetic reasons. With exothermic processes there is a risk of positive feedback leading to a runaway.
Effectively, you want a system that will produce a 12-hour phase change* in the outside temperature cycle.I see what you did there :-)
* This is a temporal phase change, achieved by a physical phase change
I don't get it. Suppose I have a material that melts/freezes at room temperature. This only works once, and then it's done. Say I want to heat my building in the winter. I have liquid 'stuff' that freezes as the room temp drops just below where I want it, so it keeps the room warm until it's entirely frozen. Now what? How am I going to get it into liquid state again? I have to turn the heater on and it has all the much more work to do since it has to melt all this nice stuff on top of actually heating the place. It seems I've saved no energy at all, so I'm not sure what you're getting at.Sure, the use of a phase-change material would not solve this particular problem. Imagine a climate (or time of year), when the temperature changes throughout the day, oscillating between a low of 15 °C and a high of 30 °C (≈59 °F to ≈86 °F), and you would rather keep the house at 22 °C (≈72.5 °F) with minimal energy usage.
Heating/cooling is all about insulation, not thermal capacity. The more thermal energy that passes from the hot side to the cold side, the more energy it takes to put it back.
Industry, the primary consumer of resources, seems not to care. In the middle of winter I watched the power consumed by the air conditioners in the computer lab. All it needed was a fresh air fan on the roof since it was well below freezing outside, and there they are pumping heat out of the lab to the radiator on the roof, and not even into the heating system keeping the offices warm.They should care. But, I would like to remind folks that the point of this thread is not to answer problems of economics, politics, or even practicality. I want to know how to express the relationships between ΔH and ΔS and working temperature range of such an equilibrium. Simple thermodynamics/algebra/calculus.
Another building (built for IBM) had the heater break down on an August day. We had the doors/windows open and still had to wear winter coats because there was no heat to mix with the cold system. Temp was set just like water in houses: by mixing just the right amount of hot and cold, and not just turning off the whole system when it was cool enough. Apparently the utility bill was of no concern.
Benefit of covid: Our altered social practices have seemingly prevented about two years of all the common stuff I/we usually contract each year. Sorry this hasn't been entirely true for you.
Water doesn't get compressednot really (Water is compressible—not much, but enough. Also, I'm not sure why you would say this, as it means that there is less room for added gas—a more compressible liquid would "make room" for the added gas as the pressure increases...)
you can inject any amount of gas into the water tank, as long as it can hold that pressure.not really (at some point the pressure is high enough that it will liquify, and then there is less compressibility)
The reason to use water is to make hydrogen less dangerous during transportationHow? I can't think of any benefit from adding water. It just means that higher pressures will be needed to store the same amount of hydrogen (which is more dangerous), and more mass being carried (requiring more energy). If the hydrogen catches fire, the water won't do anything to stop it...
Thanks @chiralSPO .you're welcome!
I can't help wondering about the original question.I believe this is correct.
"Is there a limit to how hot things can get?".
I wonder if the answer is "As hot as they were".
(about 14 billion years ago)