Some Facts Resulting from the Key Variables Used in the Description of the Recuperative Heat Exchangers

Journal Title: Strojnicky casopis - Journal of Mechanical Engineering - Year 2018, Vol 68, Issue 3

Abstract

There are the various types of heat exchangers. The selection of the heat exchanger right type is the first basic assumption for its optimal operation. The heat exchanger calculation itself is another prerequisite for its optimal operation. This article deals with the variables which are usually used to describe the stationary operation of any recuperative heat exchanger with two incoming and two outgoing streams. The knowledge of these variables, including the facts resulting from them, is necessary not only from the point of view of the calculation but also from the point of view of the evaluation of the experimental data of any heat exchanger. The variables values needed for the calculation of heat exchangers, so-called key variables, must always fall within the values range determined on the basis of generally valid knowledge about heat exchangers. The article also deals with the determination of the limit values defining the values range of these key variables.

Authors and Affiliations

Štefan Gužela and František Dzianik

Keywords

Related Articles

Research of Cavitation at High Shear Stress

The article describes the theory of cavitation at high values of shear stress in a viscous liquid. For this purpose, a spatial model of two cylindrical shells imposed concentrically was designed. In the narrow gap betw...

Experimental Evaluation of Mechanical Properties of Friction Welded Dissimilar Steels under Varying Axial Pressures

The present study emphasizes on joints two industrially important materials AISI 304 with AISI 1021steels, produced by friction welding have been investigated. Samples were welded under different axial pressures rangin...

Mathematical Model for Velocity Calculation of Three Types of Vehicles in the Case of Pedestrian Crash

This paper treats influencing factors in the determination of vehicles speed on the pedestrian crash moment according to pedestrian throw distance and formulates a mathematical model for vehicle speed determination. Ve...

Optimization of Sluice Gate under Fatigue Life Subjected for Forced Vibration by Fluid Flow

A ‘Sluice’ is a water-flow control gate works with sliding. So, it’s a mill race, flume or a penstock, channelling water towards a water mill, traditionally a wood or metal barrier sliding in grooves that are set in the...

Simulation Process Deep Drawing of Tailor Welded Blanks DP600 and BH220 Materials in Tool With Elastic Blankholder

The high-strength steels and tailor welded blanks (TWB) are applied in construction of cars parts to reduction of cars weight [1, 2]. The application of these materials brings possible complicatons during the forming w...

Download PDF file
  • EP ID EP43960
  • DOI https://doi.org/10.2478/scjme-2018-0038
  • Views 205
  • Downloads 0

How To Cite

Štefan Gužela and František Dzianik (2018). Some Facts Resulting from the Key Variables Used in the Description of the Recuperative Heat Exchangers. Strojnicky casopis - Journal of Mechanical Engineering, 68(3), -. https://europub.co.uk./articles/-A-43960