PDF Publication Title:
Text from PDF Page: 052
3.9 Reduced need for chilled water Chilled water is often used as a cooling medium instead of regular cooling water in difficult condensation services. This can often be avoided by using compact heat exchangers instead of shell-and-tubes as condensers. Compact heat exchangers offer an economical way of working with crossing temperatures and a very close temperature approach. This means a compact heat exchanger can perform required cooling with cooling water of a much higher temperature than a shell-and-tube condenser. Eliminating the use of chilled water leads to lower operating costs, and cuts investment costs if you are building a new plant. Example In this example an acetone condenser cools the incoming gas from 38°C (100°F) to 22°C (72°F). An AlfaCond compact heat exchanger can accomplish this with 20°C (68°F) cooling water, whereas a shell-and-tube requires chilled water at 12°C (54°F). Figure 3.24 shows the temperature programmes when using chilled water and regular cooling water. Switching to regular cooling water saves 200 kW of electricity. In addition, investment costs would drop by roughly €170,0000 if this was a new plant being built, since no chillers need to be installed. This compares to the estimated total investment cost for the plate heat exchanger of €172,000. For a new plant, the whole heat exchanger investment is more or less offset by avoiding chiller investment. The diagram in figure 3.23 shows the payback period for different electricity prices. It shows a revamp scenario, i.e. reduced installation costs are not included in the calculations. Results Saved electric energy Assumptions • AlfaCond heat exchanger • 8,400 operating hours per year 200 kW Figure 3.25 Eliminating the need for chilled water Payback period for investment in more efficient cooler. Pay back period (years) 12 10 8 6 4 2 0 0 20 40 60 80 100 120 140 Electricity price (EUR/MWh) Reduced chiller investment cost in case of new plant €170,0000 52 • Chilled water completely replaced by regular cooling water • Negligible difference in required pumping power for chilled water and regular cooling water • Revamp scenario • Cost for heat exchanger: €43,000 • installation factor: 3 • Total installed cost: €172,000 • Chiller COP = 4 • Condenser capacity: 800 kW (thermal)PDF Image | Waste heat recovery Optimizing your energy system
PDF Search Title:
Waste heat recovery Optimizing your energy systemOriginal File Name Searched:
waste-heat-recovery-ppi00443en.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)