A STUDY ON ENERGY EFFICIENCY, ENVIRONMENTAL EMISSIONS AND ENERGY SECURITY OF LIMESTONE BASED CEMENT INDUSTRIES IN NEPAL: CASE STUDY OF HETAUDA CEMENT INDUSTRY LIMITED(HCIL)
Date
2023-03
Journal Title
Journal ISSN
Volume Title
Publisher
IOE Pulchowk Campus
Abstract
This study is aimed at examining the energy efficiency, energy intensity, environmental
emissions reduction potential and energy security scenario of Hetauda Cement Industry
Limited (HCIL) in Nepal. The research is being conducted with the objective of
studying an existing benchmark for the energy intensity of the cement industry in Nepal
and to examine the energy security risks for the limestone-based cement industries
relying on imported energy. A study of the energy efficiency of the HCIL identifies that
for the past five years specific power consumption has gradually increased from 223
kWh per ton to 295 kWh per ton of cement. The capacity utilization of the plant was
below 50%. The plant's continuous operation over the last 36 years has reduced the
efficiency of various plant equipment, increased breakdown time, increased production
costs, and increased other indirect losses. Study suggests ways to optimize energy usage
and reduce costs with lighting improvement with payback period of around 2 years, a
gravel bed filter installation to emission control with payback of 3 years and waste heat
recovery unit of 1.2 MW electricity capacity with payback of 14 years
Description
As energy has been an important commodity requiring in almost every field. As
accessible energy has quantitative constraints, efficient energy use has become critical.
A major principle of utility-sector energy efficiency programs is that the energy they
conserve reduces and balances the energy that would otherwise be delivered by the
electricity grid or the natural gas infrastructure(Schumacher & Sathaye, 1999). Such
saved kWh (electricity) or thermals (natural gas) are viable system resources because
energy savings from customer programs can lower system demand enough to prevent
the need for new supply infrastructure, such as generation plants, transmission lines,
and distribution system upgrades
Keywords
HCIL