Experimental Analysis Of Effectiveness In The Plate Heat Engineering Essay

Engineering applications, one of the most of import and most common processs, different temperatures is the heat exchange between two or more fluids. This alteration was made devices are normally referred to as heat money changers. Recently, home base heat money changers, warming, heating-cooling applications, the nutrient and decorative industries are to a great extent used.

Plate heat money changers used in this survey as the footing of heat transportation surfaces, is normally made of thin metal sheets. These metal surfaces can be straight or wavy mode. Plate heat money changers, sealing home base, coiling home base and fives can be analyzed in three groups. Heating, chilling and airing applications, they need higher productiveness, economic favoritism and a compact design that will make through home base heat money changers. Home plates in assorted sizes and stuffs for a broad scope of picks, home base heat money changers provide superior flexibleness. This flexibleness gives great advantage in many thermic procedures to plate heat money changers. Plate heat money changers are normally higher than the shell-tube type heat money changers have the entire heat transportation coefficient [ 1-3 ] . A home base heat money changers construction is shown in Figure 1 [ 4 ] .

Figure 1. Plate heat money changers construction

Changeless force per unit area home base

The first home base

Plate heat money changer gaskets

End home base

Traveling force per unit area home base

Top saloon bearer

Lower bearer bars

Support column

Tortuosity cogent evidence clamping bolts

Connection bolts

There are many surveies related to plate heat money changers in the literature [ 5-15 ] . In this survey, a home base heat money changer used for warming and chilling systems have been designed as by experimentation and effectiveness values of home base heat money changer have investigated for different temperatures and flow rates.

2. THERMODYNAMIC Analysis

Experiments were carried out for different i¬‚ow rate and temperature values.Theme asured variables were the inlet-outlet H2O temperatures and the i¬‚ow rate of hot and cold H2O, respectively.The heat transportation rate in the heat money changer is dei¬?ned as:

( 1 )

Heat capacity for hot and cold i¬‚uids:

( 2 )

( 3 )

The effectivity of heat money changer is given as:

( 4 )

( 5 )

or

( 6 )

Here the maximal possible heat transportation rate Qmax is determined as:

( 7 )

Where Cmin represents the smaller of heat capacity for hot and cold i¬‚uids.

3. EXPERIMENTAL ANALYSIS

Experimentally, heating-cooling system used in home base heat money changer was designed and constructed. The experimental system was operated for warming and chilling instance. Experiments were carried out in the different temperature and flow rate values. Basically, the experimental set-up consists of home base heat money changer for heating instance, home base heat money changer for chilling instance, two warmer, hot H2O armored combat vehicle, infrigidation system with compressor, cold H2O armored combat vehicle, flow metres, pumps, valves, expand box and thermocouples. Experimental system is besides schematically shown in Fig. 2.

Fig.2. Schematically experimental apparatus

The informations were collected by computing machine controlled informations lumberman. Flow rates, recess and mercantile establishment temperatures of the H2O were measured and recorded continuously throughout the experiment. The home base heat money changers used in experiments are in countercurrent flow. Further inside informations of the experimental process can be found in Ref. [ 5 ] . The elaborate geometric features of the corrugated home base are given in Table 1.

Table 1. Geometric features of a corrugated home base

Plate length

0,48 m

Plate breadth

0,296 m

Entire Number of Plates

6

Heat transportation country

0,16 M2

Plate Material

0.5 millimeter SS AISI 316

Gasket Material

EPDM

4. RESULT AND DISCUSSION

Fig. 3 illustrates the fluctuations of the heat transportation rate and effectivity values with hot H2O recess temperature for 0,67 m3/h volume flow rate. As seen in Fig.3, heat transportation rate and effectivity values value addition with increasing hot H2O recess temperature.

Fig.3 Variation of heat transportation rate and effectivity values with recess hot H2O temperature for 0,67 m3/h

Fig. 4 illustrates the fluctuations of the heat transportation rate and effectivity values with hot H2O recess temperature for 0,95 m3/h volume flow rate.

Fig.4 Variation of heat transportation rate and effectivity values with recess hot H2O temperature for 0,95 m3/h

Fig. 5 illustrates the fluctuations of the heat transportation rate and effectivity values with hot H2O recess temperature for 1,16 m3/h volume flow rate.

Fig.5 Variation of heat transportation rate and effectivity values with recess hot H2O temperature for 1,16 m3/h

Fig. 6 illustrates the fluctuations of the heat transportation rate and effectivity values with hot H2O recess temperature for 1,05 m3/h volume flow rate.

Fig.6 Variation of heat transportation rate and effectivity values with recess hot H2O temperature for 1,05 m3/h

Fig. 7 illustrates the fluctuations of the heat transportation rate and effectivity values with hot H2O recess temperature for 1,13 m3/h volume flow rate.

Fig.7 Variation of heat transportation rate and effectivity values with recess hot H2O temperature for 1,13 m3/h

Fig. 8 illustrates the fluctuations of the heat transportation rate and effectivity values with hot H2O recess temperature for 1,15 m3/h volume flow rate.

Fig.8 Variation of heat transportation rate and effectivity values with recess hot H2O temperature for 1,15 m3/h

5. CONCLUSIONS

Engineering applications, one of the most of import and most common processs, different temperatures is the heat exchange between two or more fluids. This alteration was made devices are normally referred to as heat money changers. Recently, home base heat money changers, warming, heating-cooling applications, the nutrient and decorative industries are to a great extent used.

In this survey, effectiveness analysis and heat transportation analysis of the experimental home base heat money changer are presented. Consequence of recess hot and cold H2O temperature on the effectivity and heat transportation are investigated. It is found that the heat transportation rate and effectivity additions with increasing hot H2O recess temperatures at assorted volume flow rate. As expected, the heat transportation rate and effectivity additions with increasing recess temperatures.

Recognition

This work was supported by the Scientific and Technological Research Council of Turkey ( TUBITAK ) with 107M004 undertaking figure. Writers appreciatively acknowledge The Scientific and Technological Research Council of Turkey ( TUBITAK ) , Turkey, for the fiscal aid.