In this research, a distributed multi-generation system combining photovoltaic-thermal collectors with biomass generating units is established in a numerical simulation environment. This system aims to fulfilling heating demand of single-storey cottage located in Xi'an, Northwest China. The feasibility of this system and stepped utilization of different levels of energy are validated and illustrated. In order to achieve reachable maximum efficiency, key parameters of the system, such as collector area, thermal storage capacity, and set heating temperature among other parameters, are combined in a multitude of different ways, and a set of optimal parameters are obtained. After running the model, throughout the heating season, the results show that solar energy contributes 1698 kWh accounting for nearly 60% of the total energy input, while biomass accounts for 40% with 852.95 kWh, which directly determines the stability of the system energy supply. Once-daily maximum electricity buffer generated by the biomass generator holds at 21.67 kWh, the system is able to meet most of the heating load scenarios in Xi'an, China, without auxiliary energy input, as well as achieves the carbon neutrality goal.

1.
Ahmadi
,
P.
,
Dincer
,
I.
, and
Rosen
,
M. A.
, “
Development and assessment of an integrated biomass-based multi-generation energy system
,”
Energy
56
,
155
166
(
2013
).
2.
Brosowski
,
A.
,
Krause
,
T.
,
Mantau
,
U.
,
Mahro
,
B.
,
Noke
,
A.
,
Richter
,
F.
,
Raussen
,
T.
,
Bischof
,
R.
,
Hering
,
T.
,
Blanke
,
C.
,
Müller
,
P.
, and
Thrän
,
D.
, “
How to measure the impact of biogenic residues, wastes and by-products: Development of a national resource monitoring based on the example of Germany
,”
Biomass Bioenergy
127
,
105275
(
2019
).
3.
Charalambous
,
P. G.
,
Maidment
,
G. G.
,
Kalogirou
,
S. A.
, and
Yiakoumetti
,
K.
, “
Photovoltaic thermal (PV/T) collectors: A review
,”
Appl. Therm. Eng.
27
(
2–3
),
275
286
(
2007
).
4.
Deng
,
H.
,
Yang
,
X.
,
Tian
,
R.
,
Hu
,
J.
,
Zhang
,
B.
,
Cui
,
F.
, and
Guo
,
G.
, “
Modeling and optimization of solar thermal-photovoltaic vacuum membrane distillation system by response surface methodology
,”
Sol. Energy
195
,
230
238
(
2020
).
5.
Furubayashi
,
T.
and
Nakata
,
T.
, “
Analysis of woody biomass utilization for heat, electricity, and CHP in a regional city of Japan
,”
J. Cleaner Prod.
290
,
125665
(
2020
).
6.
Gorjian
,
S.
,
Ebadi
,
H.
,
Najafi
,
G.
,
Singh Chandel
,
S.
, and
Yildizhan
,
H.
, “
Recent advances in net-zero energy greenhouses and adapted thermal energy storage systems
,”
Sustainable Energy Technol. Assess.
43
,
100940
(
2021
).
7.
Hussain
,
C. M. I.
,
Norton
,
B.
, and
Duffy
,
A.
, “
Comparison of hybridizing options for solar heat, biomass and heat storage for electricity generation in Spain
,”
Energy Convers. Manage.
222
,
113231
(
2020
).
8.
Ibn-Mohammed
,
T.
,
Greenough
,
R.
,
Taylor
,
S.
,
Ozawa-Meida
,
L.
, and
Acquaye
,
A.
, “
Operational vs. embodied emissions in buildings—A review of current trends
,”
Energy Build.
66
,
232
245
(
2013
).
9.
Ji
,
J.
,
He
,
H.
,
Chow
,
T.
,
Pei
,
G.
,
He
,
W.
, and
Liu
,
K.
, “
Distributed dynamic modeling and experimental study of PV evaporator in a PV/T solar-assisted heat pump
,”
Int. J. Heat Mass Transfer
52
(
5–6
),
1365
1373
(
2009
).
10.
Karacavus
,
B.
and
Aydın
,
K.
, “
Hydrogen production and storage analysis of a system by using TRNSYS
,”
Int. J. Hydrogen Energy
45
(
60
),
34608
34619
(
2020
).
11.
Lewis
,
N. S.
, “
Research opportunities to advance solar energy utilization
,”
Science
351
(
6271
),
aad1920
(
2016
).
12.
Morrone
,
P.
,
Algieri
,
A.
, and
Castiglione
,
T.
, “
Hybridisation of biomass and concentrated solar power systems in transcritical organic Rankine cycles: A micro combined heat and power application
,”
Energy Convers. Manage.
180
,
757
768
(
2019
).
13.
Mu
,
Q.
,
Taherian
,
H.
, and
Penko
,
Z. S.
, “
Optimization of a renewables-integrated distributed generation system for a University Campus using Hooke-Jeeves algorithm
,”
Int. J. Adv. Thermofluid Res.
6
(
1
),
2
20
(
2020
).
14.
Panwar
,
N. L.
,
Kaushik
,
S. C.
, and
Kothari
,
S.
, “
Role of renewable energy sources in environmental protection: A review
,”
Renewable Sustainable Energy Rev.
15
(
3
),
1513
1524
(
2011
).
15.
Prestipino
,
M.
,
Salmeri
,
F.
,
Cucinotta
,
F.
, and
Galvagno
,
A.
, “
Thermodynamic and environmental sustainability analysis of electricity production from an integrated cogeneration system based on residual biomass: A life cycle approach
,”
Appl. Energy
295
,
117054
(
2021
).
16.
Rezaei
,
M.
,
Sameti
,
M.
, and
Nasiri
,
F.
, “
Biomass-fuelled combined heat and power: Integration in district heating and thermal-energy storage
,”
Clean Energy
5
(
1
),
44
56
(
2021
).
17.
Rozzi
,
E.
,
Minuto
,
F. D.
,
Lanzini
,
A.
, and
Leone
,
P.
, “
Green synthetic fuels: Renewable routes for the conversion of non-fossil feedstocks into gaseous fuels and their end uses
,”
Energies
13
(
2
),
420
(
2020
).
18.
Shrivastava
,
R. L.
,
Kumar
,
V.
, and
Untawale
,
S. P.
, “
Modeling and simulation of solar water heater: A TRNSYS perspective
,”
Renewable and Sustainable Energy Rev.
67
,
126
143
(
2017
).
19.
Vassilev
,
S. V.
,
Vassileva
,
C. G.
, and
Vassilev
,
V. S.
, “
Advantages and disadvantages of composition and properties of biomass in comparison with coal: An overview
,”
Fuel
158
,
330
350
(
2015
).
20.
Wang
,
Y.
,
Zhang
,
Y.
,
Hao
,
J.
,
Pan
,
H.
,
Ni
,
Y.
,
Di
,
J.
,
Ge
,
Z.
,
Chen
,
Q.
, and
Guo
,
M.
, “
Modeling and operation optimization of an integrated ground source heat pump and solar PVT system based on heat current method
,”
Sol. Energy
218
,
492
502
(
2021
).
21.
Zhang
,
J.
,
Gu
,
D.
,
Chen
,
J.
,
He
,
Y.
,
Dai
,
Y.
,
Loh
,
K. C.
, and
Tong
,
Y. W.
, “
Assessment and optimization of a decentralized food-waste-to-energy system with anaerobic digestion and CHP for energy utilization
,”
Energy Convers. Manage.
228
,
113654
(
2021
).
22.
Zhang
,
L.
,
Li
,
F.
,
Sun
,
B.
, and
Zhang
,
C.
, “
Integrated optimization design of combined cooling, heating, and power system coupled with solar and biomass energy
,”
Energies
12
(
4
),
687
(
2019
).
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