The advanced humid air turbine (AHAT) system, which can be equipped with a heavy-duty, single-shaft gas turbine, aims at high efficiency equal to that of the HAT system. Instead of an intercooler, a WAC (water atomization cooling) system is used to reduce compressor work. The characteristics of a humidification tower (a saturator), which is used as a humidifier for the AHAT system, were studied. The required packing height and the exit water temperature from the humidification tower were analyzed for five virtual gas turbine systems with different capacities (1, 3.2, 10, 32, and $100MW$) and pressure ratios ($π=8$, 12, 16, 20, and 24). Thermal efficiency of the system was compared with that of a simple cycle and a recuperative cycle with and without the WAC system. When the packing height of the humidification tower was changed, the required size varied for the three heat exchangers around the humidification tower (a recuperator, an economizer, and an air cooler). The packing height with which the sum total of the size of the packing and these heat exchangers became a minimum was $1m$ for the lowest pressure ratio case, and $6m$ for the highest pressure ratio case.

1.
Hatamiya
,
S.
, 2002, “
Gas Turbine Power Generation Technology Utilizing High Humidity Air
” [in Japanese],
Thermal Nuclear Power
,
53
, pp.
1031
1038
.
2.
Nakamura
,
H.
, and
Yamamoto
,
K.
, 1992, “
HAT(Humid Air Turbine) Cycle
” [in Japanese],
Thermal Nuclear Power
,
43
, pp.
1587
1592
.
3.
Koganezawa
,
T.
,
Inoue
,
H.
, and
Kobayashi
,
N.
, 2002, “
Experimental Study on Diffusion Flame Combustor for Advanced Humid Air Turbine
” [in Japanese],
JSME Annual Meeting
,
4
, pp.
187
188
.
4.
Higuchi
,
S.
,
Hatamiya
,
S.
,
Seiki
,
N.
, and
Marushima
,
S.
, 2003, “
A Study of Performance on Advanced Humid Air Turbine Systems
,” Paper No. IGTC-03 TS-090.
5.
Numata
,
S.
,
Yokota
,
O.
, and
Hatamiya
,
S.
, 2002, “
Analysis of Condensation Heat Transfer to Water Spray for Water Recovery System
” [in Japanese],
JSME the 39th National Heat and Mass Transfer Symposium
pp.
661
662
.
6.
Hatamiya
,
S.
,
Araki
,
H.
, and
Higuchi
,
S.
, 2004, “
An Evaluation of Advanced Humid Air Turbine System With Water Recovery
,” ASME Paper No. GT2004–54031.
7.
Rosén
,
P.
, 2000, “
Evaporative Cycles—in Theory and in Practise
,” Licentiate thesis, Lund Institute of Technology, Sweden, ISBN 91-7874-078-9.
8.
Lindquist
,
T. O.
,
Thern
,
M.
, and
Torisson
,
T.
, 2002, “
Experimental and Theoretical Results of a Humidification Tower in an Evaporative Gas Turbine Cycle Pilot Plant
,” ASME Paper No. GT-2002–30127.
9.
Rao
,
A. D.
,
Francuz
,
V. J.
,
Shen
,
J. C.
, and
West
,
E. W.
, 1991, “
A Comparison of Humid Air Turbine (HAT) Cycle and Combined-Cycle Power Plants
,” EPRI IE-7300 Project 2999–7 Final Report.
10.
Parente
,
J. M. O. S.
,
Traverso
,
A.
, and
Massardo
,
A. F.
, 2003, “
Micro Humid Air Cycle Part A: Thermodynamic and Technical Aspects
,” ASME Paper No. GT-2003–38326.
11.
Bartlett
,
M.
, 2002, “
Developing Humidified Gas Turbine Cycles
,” Doctoral thesis, Royal Institute of Technology, Sweden, ISSN 1104–3466.
12.
Nittetu Chemical Engineering Ltd.
, 2001,
Raschig’s Packing & Internals
[in Japanese].
13.
Torbidoni
,
L.
, and
Horlock
,
J. H.
, 2004, “
A New Method to Calculate the Coolant Requirements of a High Temperature Gas Turbine Blade
,” ASME Paper No. GT-2004–53729.
14.
Jordal
,
K.
, 2000, “
Gas Turbine Cooling Modeling—Thermodynamic Analysis and Cycle Simulations
,” Licentiate thesis, Lund Institute of Technology LUTMDN/TMVK-7034-SE.
15.
Aramayo-Prudencio
,
A.
, and
Young
,
J. B.
, 2003, “
The Analysis and Design of Saturators for Power Generation Cycles: Part II—Heat and Mass Transfer
,” ASME Paper No. GT-2003-38946.
16.
Parente
,
J. M. O. S.
,
Traverso
,
A.
, and
Massardo
,
A. F.
, 2001, “
Saturator Analysis for an Evaporative Gas Turbine Cycle
,”
Appl. Therm. Eng.
1359-4311,
23
, pp.
1275
1293
.
17.
Raschig GmbH, 2001,
WINSORP
[Computer Program], ver.4.02.
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