. INTRODUCTION
In factories which require high cleanness level such
as pharmaceutical factories or semiconductor factories,
severe demand specifications exists in the pressure
among rooms where cleanness levels are different. As
the case stands, the specifications prove to be unclear,
and the problems arise after the construction was over.
Therefore, a large loss may be generated because an
urgent reconstruction of the systems is required to keep
the delivery date.
HVACSIM+ [1], which developed by NIST in the
United States, is widely used as a simulator for
air-conditioning systems. The Society of Heating
Air-Conditioning and Sanitary Engineering of Japan has
disseminated and improved its in Japan. However, this
simulator cannot express the influence of the change of
pressure and flow rate on from the downstream side of
the duct to the upstream side. Therefore, it is impossible
to simulate the change of room pressure of
air-conditioning systems. As for air-conditioning
systems, various researches are done by researchers
[2-7].
In this paper, a simulation is proposed by using a
model which can propagate the influence of change of
pressure and flow rate from the downstream side of the
duct to the upstream side. Furthermore, this simulator
enables a judgment of pressure, whether it will fall
within the estimated range (tens of Pa) and faithfully
expresses the dynamic characteristic of CAV, VAV,
motor damper, and so on
. INTRODUCTION
In factories which require high cleanness level such
as pharmaceutical factories or semiconductor factories,
severe demand specifications exists in the pressure
among rooms where cleanness levels are different. As
the case stands, the specifications prove to be unclear,
and the problems arise after the construction was over.
Therefore, a large loss may be generated because an
urgent reconstruction of the systems is required to keep
the delivery date.
HVACSIM+ [1], which developed by NIST in the
United States, is widely used as a simulator for
air-conditioning systems. The Society of Heating
Air-Conditioning and Sanitary Engineering of Japan has
disseminated and improved its in Japan. However, this
simulator cannot express the influence of the change of
pressure and flow rate on from the downstream side of
the duct to the upstream side. Therefore, it is impossible
to simulate the change of room pressure of
air-conditioning systems. As for air-conditioning
systems, various researches are done by researchers
[2-7].
In this paper, a simulation is proposed by using a
model which can propagate the influence of change of
pressure and flow rate from the downstream side of the
duct to the upstream side. Furthermore, this simulator
enables a judgment of pressure, whether it will fall
within the estimated range (tens of Pa) and faithfully
expresses the dynamic characteristic of CAV, VAV,
motor damper, and so on
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