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Questions tagged [cooling]

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0
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3answers
25 views

How to dump moist air without heat backflow in evaporative cooling system?

I'm looking to design or purchase an evaporative cooling system for a small 70ft^2 California dorm room without air conditioning. This room has a single window and door to a large common space with a ...
2
votes
1answer
61 views

Cooling tower for nuclear power plants

Cooling towers for nuclear power plants often have the shape of a hyperboloid. At first glance, I thought that an obvious reason for this would be the smaller sectional area, meaning the tower would ...
1
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2answers
49 views

Cooling Down Fridge Encased in wooden box

I'm currently working on a project which involves a small fridge encased in a wooden box. It's designed for hotels and the boxes vary slightly, but one common trait is that the box has an open vent ...
0
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0answers
16 views

How to achieve successful Peltier cooling

I'm using a TEC12706 Peltier module for making a cooling setup. The hot side rejects heat to a Cooler Master Hyper 410R cooler and the cold side fin gets cold enough to form water condensate on itself....
0
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2answers
25 views

How effective will a cooled mattress be for cooling down a baby?

I'm trying to make a cooling device to used in hot areas for cooling down newborns. I'm planning to cool down the mattress to a temperature of 37C, how effective will such a system be to keep the body ...
2
votes
1answer
32 views

How to calculate adiabatic air temperature loss caused by increase of humidity?

I'm searching for an approach on how to calculate the adiabatic temperature loss of air when increasing its humidity by a humidifier. Assumed we have the following setup: Air measuring position 1 (...
0
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0answers
12 views

Can I oversize my air conditioner if I use a two speed compressor?

The upper floor of my house has a split A/C, three-ton. When the temperature gets up above about 95 Fahrenheit, the unit can't ...
0
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0answers
10 views

Calculating cooling power for server room

I'm trying to calculate how much cooling power I need to keep a server room (about $60 m^2$ with $3m$ height) in 25℃. How exactly I should do this calculation? I summed up wattage of all ...
0
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0answers
24 views

Developing a model of rate of cooling of steel tube in air

I am trying to develop an equation to determine the cooling rate of a steel tube in air. I'm using Fourier's Law, Stefan-Boltzman Law, Newton's Law as well as the specific heat capacity equation. The ...
1
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1answer
38 views

Absorbing heat from a surface

I have a cold body of constant temperature A and a hot surface several times it's area. What is the best way I can absorb the heat from that surface using A. Will sheets of metal like alluminium or ...
1
vote
1answer
44 views

Air Cools As It Expands

What is the degree of cooling caused by air flowing from smaller diameter into a large diameter? How much does air cool as it expands? If the air inlet was the biggest hole on the right and the ...
0
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1answer
39 views

Peltier Element - Segregation of the Hot/Cold

Referring to this diagram: How does the height of the P and N components affect heat or cold generated on this thermoelectric element? The idea I keep having is that it seems like the hot and cold ...
1
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1answer
16 views

Variables Relating to Atmospheric Water Generation

I am interested in discovering a method to relate air flow to temperature reduction efficiency. The purpose of this is in application to atmospheric water generation. The apparatus will involve a ...
2
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1answer
82 views

Exiting air temperature in direct evaporative cooler vs cooling tower

In a direct evaporative cooler, dry air is passed by a water reservoir to evaporate water into the air, causing the latent heat of vaporization to be absorbed from both the air and the water; this ...
2
votes
1answer
42 views

Calculate amount of evaporative coolers needed to cool down an area

I have a task to create a software that calculates how much evaporative coolers are needed to maintain a certain temperature in a given room. I need to create a simple form, where variables are next : ...
0
votes
2answers
64 views

How to determine optimum chilled water outlet temperature?

We have water cooling chillers and crahs in our data center. What I want to learn is what will happen if I increase the chilled water temperature. For example, the indoor units (CRAH) set temperature ...
-1
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2answers
34 views

What is the cheapest and easiest way to cool 2 liters of water without using ice or a fridge? [closed]

Working on a new prototype and I would need the answer to this: What is the cheapest and easiest way to cool 2 liters of water without using ice or a fridge?
3
votes
1answer
59 views

Designing a Chilled Process Water System for Small Plant

I am designing a new, closed loop,chilled water system for our small injection molding outfit and can use some help where to begin. Here are some of my knowns: Northeast NJ, USA, no air conditioning. ...
1
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0answers
26 views

How can I develope a water loop cooler system sustaining with liquid nitrogen? [closed]

Water will be circulated in the water pipe and liquid nitrogen tanks heat going to cool the water pipe,by the way to the water too. And fan is going to blow this cold air and heat is going to be ...
1
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0answers
30 views

Ventilation requirements of a closed housing of a video wall

Our company builds rather large video walls that are driven by computers next to them. In one of our current project the size of the installation is 21 55" displays side by side in portrait mode and 4 ...
-1
votes
2answers
78 views

is it possible to use copper coil instead of pads in air cooler [closed]

The pads are used in air coolers to cool the air but make it more humid. Is it possible to use copper / aluminum coils instead of pads to get cold and dry air?
0
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2answers
130 views

Can I keep hardened steel cool with ice while welding?

I would like to weld a piece of hardened steel but i don't want to ruin the treatment on the tip of the piece. Can i put some ice in the middle of the shaft so the heat generated from the welding (...
3
votes
2answers
436 views

Use two passive CPU coolers on one single CPU?

I aim on building a silent, completely passively cooled PC, with no moving parts at all (I am aware that it is cheaper to go for an inaudible computer instead, using low speed fans. This is not the ...
0
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1answer
39 views

Lubricant fluid and Rubber compatibility

I have a portable band saw, which I plan to add lubricant fluid to (this is getting ahead of myself, as I haven't even constructed a portable band saw stand). The main problem with this and the reason ...
2
votes
1answer
165 views

Cooling with fans in narrow space

I'm building a LED ceiling lamp. The idea is to mix different tones of white to get desired tone. It will initially have 120W LEDs and maybe more later It will probably never run at full power but I ...
0
votes
1answer
59 views

Do 36 inch diameter fans exist that push 25,000 CFM?

I own a warehouse that needs to push 25,000 CFM. I currently have an old warehouse exhaust fan that doesn't push anywhere close to this. The diameter of the fan blade is about 36 inches, but the ...
3
votes
2answers
1k views

How to cool down a warehouse?

I have a warehouse ( 36m x 14.4m x 10m ) that I want to keep it under 30 degrees Celsius but everyday the temperature will goes above that. It has two turbine ventilator that I don't know the ...
2
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0answers
132 views

Choosing sides of a shell and tube heat exchanger for oil cooling

I recently took a quiz from POWER magazine that asked the following question: In a typical cooling system for lubricant oil in a gas turbine, which configuration is preferred to prevent leaks and ...
0
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2answers
42 views

Is circular water cooling reliably more efficient than static air cooling?

I'm looking into developing a system that supplies wasted heat of the transformer of my aquarium LED light (which is always quite) to the aquarium water in order to save resources. The heat which is ...
1
vote
2answers
58 views

Temperature dependent electricity consumption of HVAC System

I am trying to figure out if there is a decrease in electricity consumption of a cooling unit if the ambient temperature decreases from 35°C to 20°C. More detailed, a company is planning to install an ...
0
votes
1answer
41 views

Cooling a small high-power device

I have a small device emitting up to ~90 Watts thermal power over a surface of 2x2 square centimeters. What is the best way (both commercially and DiY) for keeping the temperature of the device ...
1
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0answers
15 views

can we run rotary compressor of Air conditioner with different frequency level ? [duplicate]

I am working on split type AC compressor. I actually want to know, if i changed the frequency of the compressor to run on different power level, will it affect the life of the compressor. My actual ...
0
votes
2answers
89 views

Window mounted split air conditioner

I was wondering if there are any window mounted split air conditioners in US market or anywhere else - One in which compressor and radiator hang out of the window and only evaporator is inside the ...
1
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0answers
25 views

How to estimate cooling time of pipe due to inner flow (instationary heat transfer)

I have to determine the cooling time of a pipe from its initial temperature $\vartheta_{\text{wall,}1}=500 \text{ °C}$ to the temperature $\vartheta_{\text{wall,}2}=150 \text{ °C}$. The cooling ...
2
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0answers
69 views

Thermal Conductivity [closed]

So a product of me being a bored mechanical engineering student and my love of camping has prompted me to attempt to make my own Seebeck generator. It will be powered by a simple wood fire in a can ...
1
vote
1answer
1k views

CFM needed to ventilate a Ethereum mining rig? [closed]

I am planning to deploy two Ethereum mining rig in my store room. Both rigs will have a total of 14 RX 570 GPU's and rest of usual suspects. The GPUs and PSU will be running at full usage while other ...
1
vote
0answers
188 views

Calculating heat transfer in a cooling loop

Imagine a closed pipe like below, filled with a liquid. The pipe is copper. Then imagine a small point heat source of X watts applied to the outside of the pipe in the position shown. Heat warms the ...
1
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3answers
138 views

Most efficient airflow pattern to cool a recessed shelf

I have a recessed shelf which holds three components that each generate heat: A projector A computer An audio power amp The shelf is located at the top of the wall and open at the front but closed ...
0
votes
1answer
259 views

Is evaporative cooling for a pool effective?

Hot humid east TX; Large subdivision pool is warm ,92F. A plan is being make to cool it with evaportive spray . One data point is : dry bulb= 82.0 , wet bulb = 79.7 F. This is likely typical average ...
2
votes
1answer
1k views

Is a metal Prince Rupert's drop possible?

Can a Prince Rupert's drop be made of metal instead of glass?
2
votes
1answer
744 views

How to design a cooling chimney for a computer server?

I'm building a server type computer consisting of integrated motherboard, CPU, RAM and hard disk. There will also be a standard power supply unit. This is to be a Steam Punked computer, so... I ...
1
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3answers
398 views

Should an auxiliary cooling fan blow air or draw it?

I have a Li-Po battery charger that comes with its own cooling fan which, like most of the cooling fans, blows hot air out of the charger to cool the charger down. I have a spare fan and I was ...
4
votes
2answers
371 views

Can I control latent/sensible heat changes in a counter-flow, induced draft cooling tower using climate?

Some extensive background information to start I'm attempting to reduce water consumption at 25+ production facilities, and I've identified that the largest consumption of water (60+%) comes from ...
-1
votes
1answer
244 views

Some questions about liquid nitrogen cooling [closed]

I am currently tinkering with a railgun experiment, and I was thinking of using a liquid nitrogen loop to cool the rails down to very low resistance, and inject some nitrogen into the barrel between ...
7
votes
5answers
6k views

Radiators in series or parallel?

So let's say I have some heat generating machine be it a combustion engine or a fridge cooled by a fluid. I don't have a single radiator that is big enough for the amount of heat being generated but I ...
1
vote
1answer
809 views

How much does an evaporative cooler cool down a room

So I'm trying to create a system that automatically runs evaporative coolers to keep a warehouse at a desired temperature, given the internal and external temperature and humidity. I can get the ...
5
votes
2answers
848 views

Do heat pipes work in any orientation?

I think I understand how heat pipes work, and thus the following one has me flummoxed:- It's from a typical bulk order Chinese web site, but I've seem many similarly contorted arrangements. They are ...
3
votes
1answer
84 views

How do you actually control the cooling level of AC?

I'm hoping this is a relatively simple question to answer, but I just couldn't find it on Google. With regard to air conditioning (or any cooling system that relies on compressing/evaporating), how ...
1
vote
1answer
47 views

How small can coolers get? [closed]

Ive been wondering about how small of a cooler you can build. Although this probably is just really low-level engineering, i have a rather particular question. For my idea, the cooler has to be as ...
5
votes
2answers
86 views

What's more energy efficient: fewer air conditioners working at max capacity or more working at part capacity?

The central heat and air in the house I'm renting is unable to keep the house below 80 °F during the hot summer here (100 °F days). We've had 3 HVAC techs out to look at it and they all say there's "...