central zone and the two largest develop-
ment zones in the west and east of the
municipality. This strategy translated
into three main investment programs:
l modification of the east network from
85 C (185 F) heat supply to 95 C
(203 F) heat supply
l;construction of a new north feeder
with 120 C (248 F) heat supply
l;construction of a new south feeder
with 120 C (248 F) heat supply
The capacity for growth of the origi-
nal Jiamusi urban heating system was
limited by its network configuration, even
though the two existing CHP plants were
capable of delivering more heat from
their existing capacities. The major part
of the existing network had been
designed to supply hot water from the
eastern CHP plant directly to numerous
radiators in the end-users’ premises. This
limited the heat supply temperature to 85
C (185 F) and the pressure to a maximum
of 6 bar (87 psig), and subjected the net-
work to large heat losses as it was losing
water at a rate of 1,200 cu m per hour
(317,000 gph).
To overcome these technical constraints, Dalkia Jiamusi built approximately 90 new substations on the eastern
network after taking over the management of the network in summer 2007.
This enabled the primary water supply
temperature to be raised to 95 C (203 F)
and enabled the existing network to be
connected to additional areas previously
supplied by independent block boiler
houses. (Since the ground is frozen for six
months, work on the network can only be
performed from April 15 to Sept. 15.)
With the construction of the north
feeder beginning in 2009 and the south
feeder beginning in 2012, Dalkia Jiamusi
will be able to increase the supply temperature to 120 C (248 F), buy more
energy from the larger east cogeneration
plant and increase the total supplied
area to its targeted goal of 14. 5 million
sq m ( 5. 6 sq miles).
The network expansion achieved to
date has already enabled Dalkia Jiamusi
to buy more, cleaner energy from the two
CHP plants. As a result, 64 independent
coal-fired boiler houses and nine JHC
coal-fired boiler houses were removed in
2008. Between 2007 and 2008, 179 sub-
stations were renovated and/or installed,
and 21 new substations will be built in
2009 to 2010. More than 5,500 valves on
the primary and secondary networks have
also been replaced. These upgrades have
decreased the average age of network
components.
Other System Improvements
Beyond the distribution system and
plant upgrades, Dalkia Jiamusi has made
numerous other improvements – in automation, communications and customer
service – that are also vital to the system’s
success. The company installed a SCADA
(supervisory control and data acquisition)
system enabling real-time management of
the substations and the network, which
has optimized energy efficiency and
users’ comfort. Dalkia also implemented
its proprietary enterprise resource planning system, with specialized modules
on maintenance management, energy
management, fuel supply and customer
service.
The company now communicates
with the public via newspapers, local
radio, a new Web site and an information
stand in the city’s main square. To deliver
better customer service, Dalkia Jiamusi
has introduced a 24-hour customer help
desk, begun conducting annual customer
satisfaction surveys, opened three strategically located fee collection offices,
issued smart cards to facilitate customer
payments and offered elderly and handicapped people transportation to and from
the collection offices – all of which has
helped bring down customer bad debts
from 7 percent to 2 percent.
l eliminated the use of 26,000 tons of
standard coal in the 2008-2009 heat-
ing season compared to the prior year
l reduced water loss in the pipeline by
23 percent in the 2008-2009 heating
season compared to the previous year
l;decreased heat supplied by coal-fired
block boiler houses from 30 percent
in 2005 to 10 percent in the 2008-
2009 heating season
In the future, the company expects
to achieve the following additional
reductions in CO2 emissions:
l
70,000 tons/year of CO2 by reducing
network loss (around 1. 7 million tons
of CO2 over 25 years)
l;200,000 tons/year of CO2 by connect-
ing buildings that will switch from
low-efficiency heat-only boilers to
Dalkia Jiamusi’s network (around
5. 2 million tons of CO2 over 25 years)
l
20,000 tons/year of CO2 if Dalkia
proceeds with the first phase of a
geothermal project
The future may also hold the
development of geothermal heating in
Jiamusi, where studies have indicated
the presence of geothermal resources.
The company’s technical, financial
and feasibility evaluation of these
Already Reducing
Environmental Impact
The modernization and modification of JHC’s former network design has
significantly improved energy efficiency
and reduced water loss. Dalkia Jiamusi’s
various system improvements have
already accomplished the following:
l reduced CO2 emissions by more than
65,000 tons in the 2008-2009 heating
season over the prior year
l reduced energy consumption per
square meter by 6. 6 percent in the
2008-2009 heating season over the
prior year
Courtesy Dalkia (China) Energy Management Co. Ltd.
Dalkia Jiamusi’s contribution to the local environment includes participation in community
activities. Shown here, the company and its
staff donated money to help the earthquake-hit Sichuan area. Among other efforts, Dalkia
employees have provided food to needy area
families, and the company has put jobless
women to work, paying them to make quilts
for insulating valves, heat exchangers and other
accessories inside substations.
