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foxstar (Mechanical) (OP) 14 Oct 16 23:55 Hello Dear Fellows, Recently I had experienced some difficulty to get some reliable technical information concerning ADsorption chillers versus ABsorption chillers. As matter of fact,those difficulties even increased when I asked for a real and current...

Hello Dear Fellows, it's good to be back! ... HEAT-EXCHANGER - in two different processes: a) water (cool phase) to water (hot phase); b) water to steam. Is anybody has perfomed some theoretical calculation as well experimental validation? Thank you, and Merry Christmas and a Happy New Year! RS

Hello my Good Fellows! Thank you for your expertise and advice! No doubt we are approaching to the solution, "I can feel it", something in the line of what CCFOWLER wisely expressed in his post. My "technical feeling" says that the main solution is related with the oil system and its...

DGALLUP, I just checked the bearing temperature range. It's goes up to 98ºC, sometimes higher, 105ºC. It might be reasonable, to increase cooling the (forced pumped) circulating lubrificant outside the bearing. Thanky you.

I suppose you will design an automatic close-control unit of a ton, it means 3,52 kW. No less than 10K USDollars. Have a nice week-end!

Now-a-days it's becoming usual those Air-Ventilators plug-fan type axial or semi-axial applied specially in the hygienic AHU's. My question to the Collegues/Forum, if someone knows the applied aerodynamics of those ventilatores, mainly the adequated selection characteristics to be used. Which is...

I would add to those three, "Design Analysis of Thermal Systems" by Robert F. Boehm, may I say not so academic, but suitable for those post-graduate/professional examinations, I guess. Study hard and good luck!

Hi DGALLUP, maybe you are rigth, I'm going to check the the measured temperature profiles. I'll let you know. Tks.

As TD2K pointed, using a coherent units system, you do not need to consider any numerical constant. But if you mix units from two or more dimensional systems, their scale/equivalence needs those numerical elements. So 500 has to be address to some particular formula, I mean it's far from to be...

Hello Electric(Pete), As a matter of fact, there's some critical issues about the possible thermal-shocks. In fact, we have to explore the oil approach. I must confess, was thinking in this direction too and your opinion enforces it indeed, in spit of looking at the problem from other...

Hi! This subject is somewhat new to me, however I studied it quite deep at my graduation course. The case: Steel industry,i was called to meet three motors each with power of 250 kW, two bearing and a the motor shaft in between. In summer time the temperature rises up to 95 to 98 ºC. They ask me...

To mauricestoker: Sorry my ignorance, what you mean by LCCA ? (probably a not so long payback ?). Please can you bring to this discussion real cases, experiences you dealt with? Thank you!

To dcastro: One date-input is that I pay during the day, I mean in three times more for 1 kWh-day than for 1kWh-night. Don't you think that could be an oportunity to explore the save-cost potencial difference? Have you real data which says that I'm wrong. In my experience and taking in account...

To IRstuff, The electrical tariff during the nigth in that site is 1/3 cost of that one during the working day. The cost difference pays you the ice-rink in 7 to 10 years of running-time. It's mentioned that the replacing power chiller can go up to 80%, therefore to have a chiller unit to help...

I'm coming back again to these fantastic foruns and may I propuse a quite wide and interesting matter, I believe: "LATENT COOLING (ENERGY) STORAGE VERSUS CHILLER POWER INSTALLED". It is known that combining a chiller installation with a ice-rink ou a with whatelse cooling storage, (it should be...