Specifications

High temperature & humidity
chamber featuring a heat
pipe for cooling
ESPEC has developed a high temperature
and humidity chamber with superior
energy-saving efficiency.
Heat pipes are used for the cooling system,
which means that the refrigeration system
does not use electrical power to reduce
power consumption.
Test can be conducted at
95°C/95%rh
Control via the heat pipe is not affected
by dehu midif ication t h rough the
refrigerator, achieving wider control range
for high temperature and high humidity.
Accommodates the heat load
generated from specimen
As the refrigerator operates even under
high temperature and high humidity,
excess capacity is not available to treat
the heat generated from specimen. As a
result, the current allowable heat load is
very limited.
PHP is capable of treating a 600W (PHP-
4J) heat generated from a specimen while
operating at a temperature of 85ºC and
relative humidity of 85%.
Optimized for continuous
operation in high temperature
and high humidity testing
Stable operation in the high temperature
and high humidity region, plus reduced
power consumption and water consumption
all make these models ideal for continuous
long-term operation.
Structure diagram of heat pipe
Heated area
(operating fluid evaporates)
Low-temperature area
(vapor becomes condensed)
Heat release
Heating
Vapor flow
Condensate liquid
Sealed vessel
Inside of the chamber Outside of the chamber
Characteristics
High Temperature & High Humidity Chamber (Type 2, Type 3, Type 4)
PHP
Model PHP PL
2J 300 W 100 W
3J 300 W 100 W
4J 600 W 100 W
Allowable heat load
(Chamber temperature and humidity: +85°C/85% rh)
消費電力量比較
（例）
DCインバーター搭載時消費電力量比較
PHP消費電力量比較
（PHP-4J）
●
C
omparison of power consumption under high heat load
65％ダウン
26％ダウン
66％ダウン
56％ダウン
55％ダウン
59％ダウン
70％ダウン
23％ダウン
65％ダウン
25％ダウン
28％ダウン
39％ダウン
運転条件
・ 温度制御
・ 温湿度制御
＋60℃
PL-3
PR-3
PU-3
PL-3
PR-3
PU-3
＋20℃
運転条件
消費電力量（kWh）
消費電力量（kWh）
1.000.50
1.50
2.00 2.50
運転条件
0℃
−20℃
−10℃
消費電力量（kWh）
1.000.50
1.50
2.00 2.50
1.000.50
1.50
2.00 2.50
省エネ率
最大
66 ％
省エネ率
最大
70 ％
省エネ率
最大
48 ％
省エネ率
最大 66％
省エネ率
最大 70％
省エネ率
最大 48％
PL-3
PR-3
PL-3
PU-3
PL-3
PR-3
＋85℃/
85％rh
＋20℃/
40％rh
0.50
1.00
省エネ率
最大
70 ％
PHP-3
PL-3
PHP-3
PL-3
With
load
Without
load
Jシリーズ
Kシリーズ
Jシリーズ
Kシリーズ
運転条件
排気口
閉
開
消費電力量（kWh）
1.000.50
1.50
省エネ率
19 ％
Operating conditions
Power consumption (kWh)
Jシリーズ
Kシリーズ
Chamber temperature and humidity: +85°C/85%rh
Heat load: 170 W
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