The Society for the Relief of Disabled Children

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Address
Block H, 12 Sandy Bay Road, Pok Fu Lam

Date of Implementation
2020-12-22

Installation Site
Rooftop of the second and third (top) floor

Approx. Total Area
89.6 m² (964.4 sq. ft.)

Venue Type
Flat rooftop

No. of Solar Panels
56 pcs

Photovoltaic panel type
Monocrystalline silicon (bifacial)

System Capacity
19.32 kWp

First year power generation
20,990kWh (Sufficient to supply power for 52 households per month

The Society for the Relief of Disabled Children (SRDC) was established in 1953, with the mission to support medical, surgical, rehabilitation and educational services to differently-abled children in Hong Kong. SRDC, using funds generated by the generosity of the community, established a convalescent home in Sandy Bay in 1955 for children stricken with skeletal tuberculosis. The home initially had only 50 beds but was subsequently expanded in stages to become the Duchess of Kent Children’s Hospital at Sandy Bay in 1968 and was in the frontline fighting against tuberculosis, poliomyelitis and spinal deformities. The Hospital subsequently became internationally recognized for this work and remains a training center for surgeons and health workers from around the world.

SRDC is located at Sandy Bay Road, Pokfulam, Hong Kong, the solar photovoltaic(PV) panels were installed on the rooftop of the 2nd and 3rd floors (top floor) of the building, with a total of 56 PV panels, a system capacity of 19.32 kWp and the power generation in the first year was 20,990 kWh.

Information Source: The Society for the Relief of Disabled Children

The solar PV system of SRDC uses micro-inverters that were installed at the bottom of the PV panels, 1 for every 2 panels, which have the advantage of abridging the distance of DC power transmission and diminishing losses in the process. Unlike normal inverters shared by multiple panels, the performance of multiple panels would not be affected if one of the panels is shaded.

Micro-inverters were mounted at the bottom of the PV panels/p>

The weather station mounted on the stands of the PV panels collect irradiance and ambient temperature data, which allows engineers to examine the performance of the system from the detected data. It could also be used for taking preventive measures, monitoring potential risks and making timely corrections to the system if necessary.