Building

Type of building

House + commercial area

Number of users / dwellings, floors

4 users
2 floors

Year of construction

2007

Total effective area (heated)

190 m²

Hot tap water consumption (calculated)

73 m³/a

Whole energy consumption for heating purpose after CSTS implementation

11,000 kWh/a

System engineering

Year of construction of CSTS

2007

Type of collectors

Flat plate collectors

Thermal power

21 kW_therm.

Aperture area of collectors^*)

30 m^₂

Buffer storage

7 m³

Hot tap water storage

0.16 m³

Total capacity of boilers with energy source

20 kW, biomass

Type of hot tap water heating

Decentralised

Type of heating system

Centralised

Costs

Total cost solar system

14,000 Euro

Cost of the CSTS / gross area of collectors

431 Euro/m²

Subsidies

0 %

Output

Output of solar heat^**)

9,500 kWh/a

Reduction of final energy^***)

12,600 kWh/a

CO_2-emissions avoided

./.

Solar performance guarantee

^*) Aperture area = light transmitting area of the front glass
^**) measured, between storage and piping to taps (solar system output)
^***) related to the measured output mentioned before

Donnicola Vito, Committente ed installatore

The investor is satisfied, having realised a concrete example of how plants should serve a modern apartment.
He strongly believes that his system will help convincing other people of the enormous benefits of solar thermal technology, also in terms of economic savings.

Owner

Donnicola Vito
via Torquato Tasso, 2/B
Patù (Le), Italy
Phone: +39 833 73053
Fax: +39 833 765220
vito.donnicola(at)libero.it

Operator

See owner

Description of the CSTS

Year of construction of CSTS

2007

Thermal power

21 kW_therm.

Gross area of collectors

32.5 m²

Aperture area of collectors

30 m² 

Type of collectors

Flat plate collectors

Type of assembly

On flat roof

Orientation of collectors

South (0°)

Inclination angle to horizon

60°

Freezing protection

Glycol

Overheating protection

Expansion vessel

Operation mode

Low-flow

Use of CSTS for

Hot tap water heating and space heating

Buffer storage

7 m³

Hot tap water storage

0.16 m³
(Combined solar and hot water back-up heating storage tank)

Control of backup-system / CSTS

Shared control: the regulation system uses eleven sensors.

Hot tap water system

Type of hot water heating

Decentralised

Recirculation system

Yes

For decentralised systems:
The installation on the consumer site

not available

Size of storage for hot tap water

0.16 m³

Specification (if necessary)

Combined solar and hot water back-up heating storage tank

Space heating system

Type of heating system

Centralised

Number of boilers

1

Total capacity (power output) of boilers

20 kW

Capacity of each boiler (year of construction)

No. 1: 20 kW

Energy source

Biomass

Type of boiler system

Standard

Type of operation

Operator of the CSTS system

Self-operation

CSTS monitoring

Yes: operation of the pumps

Data accessible via internet

No

Scientific monitoring / follow up

No

Maintenance contract

No

Visualisation of the solar heat output

No

Yield of CSTS plant

Output of solar heat

9,500 kWh/a

Origin of data

Design (calculated)

Measuring point

Between storage and piping to taps

Reduction of final energy

12,600 kWh/a

Origin of data

Software simulation

Solar performance guarantee

No

Heat consumption

Whole energy consumption for heating purposes after CSTS implementation

11,000 kWh/a
(total heat load for DHW)

Origin of data

Design (calculated)

Energy used for

Hot tap water heating

Whole energy consumption for heating purposes before CSTS implementation

11,000 kWh/a

Total tap water consumption

not available

Hot tap water consumption

73 m³/a

Hot tap water temperature

45 °C

Cold water temperature

8–12 °C

Summary

This combisystem has been realised with three collector fields connected in parallel.
The control system is responsible for regulation and monitoring.
A high performance combi tank has been chosen.

Producer of CSTS

CMG Solari di Giannelli Mario
Giovanni Romano
via Monte Rosa, 14
Melissano (Le), Italy
Phone: +39 833 581428
Fax: +39 833 581428
info(at)cmgsolari.it
www.cmgsolari.it

Financing of the CSTS

Form of financing

Purchase

Distribution in percentage

0 %

Costs of solar materials

Total cost of solar system

14,000 Euro

Detailed costs for

Collectors

8,000 Euro

Elevation / mounting structure

1,280 Euro

Storage / heat exchanger

not available

Backup heater

./.

Control

not available

Installation

./.

Planning / Engineering

./.

Others

./.

Operation costs of heating system

Increase of the operation cost after CSTS implementation

not available

Experiences management

Experienced problems or failures?

No

Found solutions to these problems or failures?

./.

Financial effects / project performance

Project economically efficient?

Yes

Fiscal or other financial effects?

No

Effects on rental fees?

No

Experiences technical staff

Experienced problems or failures?

No

Found solutions to these problems or failures?

./.