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zakruti.com » Knowledge, science, education » The Engineering Mindset
Industrial Heat Exchangers Explained

Industrial Heat Exchangers Explained

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Rating: 4.0; Vote: 1
Industrial heat exchangers explained, learn the different types of heat exchangers used and how they work with examples CharlieT: A customer has a central chilled water and steam plant that runs continuously year-round.
Domestic hot water is created from the steam plant. The estimated hot water needed
annually is 23, 267 MMBTUs. The proposed energy conservation measure is to install 4 water
source heat pumps to heat the domestic hot water. The proposed equipment will create an
additional 145 tons of chilled water while using the heat rejection loop to heat the hot
water. How much energy savings will be associated with this measure?
Baseline System
Chiller plant 145 tons to be replaced annually. 0. 75 kW/ton
Boiler Plant 23, 267 MMBTUs to be replaced. 76% plant efficiency
Proposed System
4 WSHP 145 tons total, 1. 848 kW/Ton, condenser 2. 656 MMBTU/HR
If you agree there are savings, how much energy will be saved? Mention any assumptions
you are making. Feel free to look up any metric conversions (i. e. kWh to MMBTU, etc.

Date: 2023-11-17

Comments and reviews: 29


I have a 6 year tenure in coal and natural gas turbine power plants, cleaning supercritical boilers and system components (oil coolers, feed water heaters, cooling towers, condensers, plate heat exchangers, etc.
1 year of demolition and disassembly of commercial and industrial HVAC systems, and have been a scaffold builder during my total 8 year tenure as a laborer. Looking to switch to the pipefitters union, and going to school for HVAC to boost my resume. Unfortunately my work experience wasnt enough, at least thats a possibility. The decision to hire is based on a vote of 30 fitters and business owners, so I have no way of knowing why I didnt make the cut during my last interview. Your videos are helping me to organize my elevator speech for my next interview thank you!

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Plate and frame heat exchangers are also commonly used in chiller plants where you dont want to mix the cooling tower water (which is open to the environment) to the chiller equipment which can cause fouling or other issues. Some commercial buildings even use them during cooler days to allow the cooling tower water to directly cool the air moving through the air handlers and bypass the chillers completely which saves energy. The heat exchanger in this case prevents the cooling tower water from contaminating the chilled water loop that cools the building. This configuration is known as a water-side economizer or chiller bypass economizer.
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I'm a tech for a Fluid Chillers Corporation. We recently built a low temperature chiller for Dow chemical. It had a boil off coil in the suction accumulator. The liquid line runs through the accumulator so the cold suction is transferred into the boil-off coil. Quite often my suction pressure will be in a vacuum on a low temp chiller. I'm curious if the boil-off coil will raise my suction pressure. The chiller for Dow was not an ultra low temperature -70F so I didn't get to see how the boil-off coil would affect the suction pressure at ultra low temps.
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Such a great and explanatory video. Thank you!
Usually in dairy industry (basically milk) the usual heat exchanger is plate heat exchanger. This heat exchanger is used for pasteurization because its able to achieve the demanded temperature really quick and the microorganisms get thermal shock, without affecting the organoleptic characteristics. Also the patterns create turbulent flow as shown, and increases the surface (approximately by 40%) so the heat transfer increases.

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An old 'get you home trick' to solve a leaky radiator was to put a raw egg in the coolant. Once boiling the white was thick enough to block the hole but would not block the pump.
My brother, head boy of his school but hopeless at all things mechanic got a leak in his petrol tank.
The funniest bit was when he called the garage once the car had stopped completely. What's wrong with it mate. I think there may be egg in the carburetor came the reply.

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I work at a waste water treatment plant. We use heat exchangers to warm digesting sludge. Heat's provided by burning methane produced in the digesters. We have generators, but they are nonfunctional, so excess methane is burnt in a waste flare. Water is heated to 170/77 in the boiler, goes into the HEs at about 150/66 to get the sludge up to 98/37 to accommodate mesophilic bacteria. Control is provided by a bypass valve on the water side.
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Most heat exchangers I've seen were on refrigerators and automobiles. I've been inside a lot of HVAC systems and I've seen chillers [and brine lines] in arenas. Industrial refrigeration would be a great topic for a video. I've heard that Kangaroos lick the inside of their forearm to use evaporative cooling to cool their blood and use their circulatory system as a heat exchanger.
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i work in aquaculture, marine fish hatchery. we have quite allot of plate heat exchangers. they are a huge pain to disassemble, clean and reassemble. you have to be very careful with rubber gaskets, so they dont leak. salt and metal. corrosion everywhere. im not an engineer, but i wonder if they can be made out of some other material rather than metal?
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Most commonly used in vehicles i. e. radiators. I worked as a machinist in an industrial heat exchanger mfg facility in Beaumont, TX. for a few years after the first Gulf War. Some of the metals we used in the mfg process were inconel, monel, hastelloy, copper nickel, stainless steel, brass, copper, titanium and most commonly steel.
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I was doing the work of heat exchangers, boilers since twenty five years. Now I am in kerala. I was in Mumbai, Saudia arabia in this field for many years. I have made new ones Re tubed many heat exchangers and boilers(horisondal, vertical and U bundles.
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I work in the pharmaceutical industry and we use finned tube heat exchangers in Air handlers for heat and cooling, also shell and tune heat exchangers for clean water
generation. great explanation
Keep the great videos coming!

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I enjoy your videos and learn something new every time i watch them
In the HVAC/Refrigeration industry there are a lot of questions for Sound and to a lesser extent vibration.
I wonder if you would like to look at this topic

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Greta video yet again.
There is a error maid in the flow direction in som of the illustrations, witch deceess the effeciency of the heat exchanger.
Please redoo the illustrations to spred out the best nollege to peaple

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You didn't talk about one of the coolest heat exchanger designs, the coil wound heat exchanger! Commonly used for multi-path cryogenic applications such as the main heat exchanger for cryogenic air separation plants.
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I hate people calling it heat exchanger. Heat is never exchanged, it is always transfered. An exchange happens in both directions. Heat only transfers from one side to the other and never both ways simultaneously.
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Great video. Typically when flow goes into the shell side of an exchanger, it enters the bottom to keep air pockets out. I work with literally dozens and dozens of these. Theres no end to the services.
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I want to buy this system from you and should be installed our exhaust generator finally result we want air condition or cool air. so, please help me for buy from you, how can i contract with you
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very educational video. congrats. can you do also a video sir about how to proper adjust a hand expansion valve on evaporator for ammonia double stage refrigeration. thank you and godbless
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Awesome vid! I totally love all of these stuff. I live in the wild Alberta and heat exchangers are a sacred matter! Thanks a lot for sharing, your vids make this world a better place!
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As far as I know, at work we use plate heat exchangers for our HTST processes, finned tube in our evaporators and condensers, and the tube and shell for i believe our CIP lines.
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What's happened to the unwanted thermal energy that got rejected into our atmosphere? that's mostly causes climate change and global warming with severe weather conditions
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I love how he tells us to comment where we've seen heat exchangers like we're 3 year old children who don't know he's just doing that to increase views and suggestions.
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The body's circulatory system is also a heat exchanger with the very advanced mechanism of being air or liquid cooled and has a variable pressure pump, on demand.
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espresso machine; milk heater; tofu maker; large scale butter maker; evaporative chiller/heater; nuclear sub; water cooled rotary gun; cryogenic computer;
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I have a few inventions that I would love to bring to life and I've found some places that can assist me however maybe you can as well
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Shell and tube heat exchangers are a real pain to maintain because usually there is never enough space to comfortably clean the bundles
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Nice Video! I'm in Industrial distribution and have sold many different heat exchangers to Steel mills, and industrial bakeries.
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Dear Paul sir I think we can also use this in a extreme IC engine which are used in heavy duty generator. I IN MY POINT OF VIEW
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Hi. I'm very interested in your 3d models. Did you create all of those yourself or are they available in some library?
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