SVIBOR - Project code: 2-15-302


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Project code: 2-15-302

Energy Transfers in the System M-M-E in Textile Industry

Main researcher: SKOKO, MIROSLAV (82014)

Type of research: applied
Duration from: 01/01/91. to 12/31/95.

Papers on project (total): 60
Papers on project quoted in Current Contents: 13
Institution name: Tekstilno tehnološki fakultet, Zagreb (117)
Department/Institute: Textile-mechanical
Address: Zagreb, Pierottijeva 6
City: 10000 - Zagreb, Croatia
Phone: 385 (0)571-649
Phone: 385 (0)571-403
Phone: 385 (0)173-133
Phone: 385 (0)444-258
Fax: 385 (0)440-276

Summary: Functional dependence of the elements in the Man-Machine-Working Environment system will be investigated on the basis of ergonomic principles, with the aim of determining an optimal balance between humane working conditions and efficiency. Typical working postures will be investigated and evaluated, as well as the cases of labourer overload. Detrimental influence of noice on workers will be investigated and efficient ways of reducing it proposed. Special attention will be paid to harmful impact of microclime conditions in relation to technological requirements in textile and apparel industry. Possibilities of more rational and efficient energy usage will be investigated. Research area includes technological processes as well as technical systems with boiler installations and energy fluid transport. Possibilities of economising on energy consumption for an average plant and for the total of textile industry of Croatia will be presented. DESCRIPTION OF THE RESEARCH PROJECT 2-15-302 ACTIVITIES FROM JANUARY 1st 1994 TO AUGUST 31st 1995 1. GENERALY ABOUT THE PROJECT PROGRAMME 2. NEW RESULTS 94-95 Investigation of the system man-machine-environment in textile and garment industry have been continued. Optimal correlations among technological, tehnical and ergonomical factors in this comlex set of interaction have been investgated, using a computer. Models of Newtonian and non-Newtonian fluid flow through carotide arthery models have been established. Photoelastic apparatus has been used for measuring purposes. To enable a systematic research of the data obtained, all the events on the flow have been noticed in bifurcation points. A modern measuring method, employing laser-Doppler-anemometer, has been used in order to obtain precise speed measurements. Optimal choice of system for reduction of electric energy consumption, in air conditioning devices has been made, and the reduction amounted to 29,7% of the power owe used. Investigations concerned with energy savings in textile and garment industry have been continued. In the period of one year, energy saving for a specific firm investigated are: through recycling of waste heat and partial substitution of new fuel with productionwaste in boilerrom - 13.751.600 MJ, through exploatation of condeser water heat in a closed backpath, with the optimisation of double-phase flow -18.460.000 MJ; through the introduction of local air-conditioning system using multispeed fans and waste tecnological fluid heat 20.974.500 MJ and through waste heat recycling in fabric drying phase - 5.076.500 MJ which makes a total of 69.962.600 MJ. Complete textile and garment industry in Croatia is of the size of 25 such firms which would mean saving of 1.749.065.000 MJ a year (around 37% less energy used) or, expressed in terms of fruel, saving could amount to 47.974.354 kn a year. Devices used to obtain these results are highly cost-effective, as they can be paid off in the period of about 2 years. Zagreb, October 23nd 1995 Prof. dr. Miroslav Skoko

Keywords: Man-Machine-Environment, Energy, Ergonomics, Heat recovery, Textile and Clothing Industry.

Research goals: Simplification of work is the primary aim, as well as investigations and determinations of manufacturing times, using ergonomic principles as a basis. More favourable economic effect should be achieved through the working process, with lower energy consumption and less labourer tiredness. On the basis of noise level increase measurements, quantitative solutions for reducing it into approved and acceptable boundaries should be determined. To achieve a satisfactory microclime conditions, rooms, machines and air conditioning equipment with better economic and other properties will be defined and present level of energy consumption reduced. Effective possible measures for waste heat recuperation from hot gases, air and fluids in energy production plants will be investigated, as well as automatisation in these processes. Estimated reduction in energy consumption per an item produced in textile and apparel industry of Croatia is around 35%, while energy consumption today is twice as big as in developed western countries.

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Last update: 10/16/95