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Operational Research

, Volume 17, Issue 3, pp 849–866 | Cite as

Potential of gas microturbines for integration in commercial laundries

  • Vítězslav Máša
  • Petr Bobák
  • Marek Vondra
Original Paper

Abstract

Cogeneration of electrical energy and heat has become a steadily growing and flourishing segment of energy industry. Application potential of microturbines moved from back-up sources for electrical energy and island operation systems, and expended as a combined source for electrical energy and heat in commercial facilities and residential premises. In this paper, we wish to present an analysis of gas microturbine integration in a commercial laundry. We opted for a professional laundry care since it is a common representative of a well-known process which requires a lot of energy input. We focus on commercial laundries with a capacity over 1000 kg of processed laundry per shift. This type of laundries is very common and has a large innovation potential. The gas microturbine was considered as a cogeneration unit as it has a process-adequate performance (30 kWe). Its flue gas helps heat main laundry input flows: hot water for the washing machines and hot flue gas for the dryers. Incorporation of a progressive technology with a common commercial process gives us a promising application potential for our work. Prices of commercial microturbines are still rather high and short payback period may be expected only if very specific conditions are met.

Keywords

Combined heat and power Microturbine Commercial laundry Market potential Payback period 

Abbreviations

Letters

cp

Specific heat [kJ/(kg.K)]

\(\dot{m}\)

Mass flow (kg/s)

\({\dot{\text{Q}}}\)

Heat flow (kW)

P

Cost ($/kWh)

T

Temperature (K, °C)

Subscripts

DL

Dry linen

e

Electricity

f

Flue gas

g

Natural gas

h

Heat

H2O

Water

Acronyms

AC

Alternating current

CCHP

Combined cooling, heating and power

CHP

Combined heat and power

DC

Direct current

GMT

Gas microturbine

GT

Gas turbine

HE

Heat exchanger

ICE

Internal combustion engine

LHV

Low heating value

NG

Natural gas

O and M

Operating and maintenance

RH

Relative humidity

Mathematics Subject Classfication

62P30 91B02 

Notes

Acknowledgments

The research leading to these results has received funding from the Ministry of Education, Youth and Sports of the Czech Republic under the National Sustainability Programme I (Project LO1202).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Institute of Process Engineering, Faculty of Mechanical EngineeringBrno University of TechnologyBrnoCzech Republic

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