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Compact Heat Exchanger

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INTRODUCTION Heat exchanger is a apparatus that has two streams of fluid that exchange temperatures in order to heat or cool the system. Basically this Blog focuses on what are compact heat exchangers, the various types, costs, advantages and disadvantages and how fouling may affect. Area density greater than 700 m²/m³ for gas or greater than 300 m²/m³ when operating in liquid or two-phase streams. TYPES OF CHE’S Plane and Frame Heat Exchanger :-(PHE)                                                  Most common type of PHE Consists of plates and gaskets Materials: stainless steel, titanium and non-metallic Operation limits:- temperatures from -35°C to 220°C pressures up to 25 bar -flow rate up to 5000 m³/h Brazed Plate Heat Exchanger :-(PHE) Operates at higher pressures than gasketed units Materials: stainless steel, copper contained braze Operating limits: From-195 C to 200°C Pressures up to 30 bar Welded Plate Heat Exchanger  Plates welded together to increase pressure and temperatur

All you need to know about GEAR FAILURE AND HEAT TREATMENT METHODS

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  Gear is a simple rotating machine element that meshes with the other gear to transmit power over a certain distance. We will see some types of gear failures and heat treatment methods that prevent the wear and tear of gear and increases the fatigue life.            Types of gear failures ·          SCORING FAILURE: Scoring is a type of gear failure which occurs if the oil film fails due to overheating of the meshing parts and the metal to metal contact produces tearing of the parts which are in relative motion and removes the metal rapidly from the surface. The criteria for selecting the best lubricating oil include choosing appropriate viscosity grade, additives, and base oil type also it should have anti-foam properties. For determining viscosity the ANSI(American National Standards Institute) or AGMA(American Gear Manufacturers Association) standard are the most common methods employed. After selecting the viscosity grade, the basic types of lubricants such as R&O (rust