Kwiksol Solar Water Heaters

Low Pressure Solar Water Heater
Close Coupled-direct system

The direct system is used where the water quality is good (less than 600ppm Total Dissolved Solids/Minerals).

A direct system is where the water to be used in the household (Hot water) is heated by means of solar radiation absorption by the vacuum tubes and directly heats the water in the solar water heater.

In the close coupled system the vacuum tubes are in integral part of the storage tank and the heated water in the tubes rises and heats the water in the tank, known as a thermosiphon system.  The system operates according to the basic principles of physics.

Solar Water  Heating:  Direct
System for Frost-Free Locations (Coastal)

The direct system is used in frost-free locations, where the ambient temperature never falls below 5⁰C and where the water quality is good (less than 600ppm Total Dissolved Solids/Minerals).

The direct system, is where the water to be used in the household (hot water ) circulates through the solar collector panels, or solar vacuum tubes manifold, transferring solar energy into the storage tank of the solar water heater.

The direct system can be installed as a Split System (pumped or thermosyphoned circulation methods), where the solar water heater is installed inside the roof or away from the solar collector panels or solar vacuum tubes, or installed as a Close Coupled System (termosyphon circulation), where the solar water heater is installed outside on the roof and above or higher than the solar collector panels or solar vacuum tubes.

Solar Water Heating:  Direct
System For Frost And Frost – Free Locations (Non Coastal And Coastal Only VP to 200Lt)

This direct system can be used in frost and frost-free locations and where the water quality is good (less than 600ppm Total Dissolved Solids/Minerals).

The direct system, where the water to be used in the household (hot water) circulates through the solar vacuum tubes manifold, transferring solar energy into the storage tank of the solar vacuum tubes.

Solar Water Heating:  Indirect
System For Frost Locations (Non Coastal)

The indirect system is used in locations where frost occurs, where the ambient temperature falls below 5⁰C and where the water quality is poor (more than 600ppm Total Dissolved Solids / Minerals).

An indirect system is where the potable water used in the household (hot) water does not circulate through the solar collector panels or array of vacuum tubes, but remains in the solar water heater and is heated through a heat exchange around the vessel.  Propylene glycol is circulated through the solar collector panels, or solar vacuum tubes, transferring solar energy into the heat exchange and in turn heating the water in the solar water heater.

The potable water and propylene glycol never mix and are held in separate chambers within the solar water heater.  The tank and solar collector panels, or the manifold above the array of vacuum tubs are connected together with two copper tubes, which are used to transfer heated propylene glycol from the solar collector panels or manifold to the storage tank heat exchanger.  Propylene glycol does not freeze and therefore protects the solar collector panels from freezing damage in frost prone areas.

The indirect system can be installed as a Split System (pumped or thermosiphon circulation methods), where the solar water heater is installed inside the roof or away from the solar collector panels or solar vacuum tubes, or installed as a Close Coupled System (thermosiphon circulation), where the solar water heater is installed outside on the roof and above or higher than the solar collector panels.

Kwikot Array of Vacuum Tubes black frame

Kwikot Direct Complete System angled view black frame

Kwikot Kwiksol Direct Solar Water Heater 200lt

Kwikot Kwiksol Indirect Solar Water Heater 250lt

Kwikot Low Pressure Solar System Angled

Kwikot Solar Collector Panel Black SOL PANEL 2B

Close Coupled – Direct System

The Complete Low Pressure System

The complete Low Pressure System is ideal for low cost housing, where homes do not have an electric water heater to supply hot water in rural areas and homes where electricity is not readily available to heat water.  It provides hot water to those who do not have the luxury of having hot water on tap.

Solar vacuum tubes
  • Vacuum tubes consist of two glass tubes manufactured from borosilicate glass.
  • The outer glass is transparent allowing light rays to pass through with minimum reflection.
  • The inner glass is coated with a special solar selective coating (AI-N/A1), which provides excellent solar radiation absorption.
  • The tops of the tubes are fused together and the air extracted, which forms a vacuum, which is key to the efficiency of the vacuum tubes.
  • If the vacuum is ever lost, the silver inner coating will turn white.
  • The water is directly heated in the vacuum tubes.
  • Tubes are freeze and hail resistant.

Solar Water  Heating:  Direct

System for Frost-Free Locations (Coastal)
  • The Kwikot Kwiksol Solar Water Heater Direct System compiles with SANS 1307, is SABS 400kPa approved and can be used as a close coupled system or split system.
  • The inner cylinder is manufactured from 2mm steel and thermo fused porcelain enamelled for cylinder longevity and hygiene.
  • Polyurethane insulation between the inner cylinder and outer casement reduces energy and heat loss.
  • 2x aluminium sacrificial anodes are fitted for corrosion protection.
  • The solar water heater is designed for domestic hot water application in conjunction with one or more solar collector panels or solar vacuum tubes.
  • The two extra water connections required for connecting solar collector panels or connecting the manifold above the solar vacuum tubes, and the booster element, ensures that the solar water heater can be used as a conventional electric water heater and as a solar water heater.
  • The solar water heater thermostat will automatically switch on when the incoming hot water from the solar collector panels or from the manifold above the solar vacuum tubes has not reached the set temperature setting on the thermostat.  This will occur on cloudy days and at night when the water temperature drops in the solar water heater or when hot water is drawn off and cold water enters the solar water heater.
Solar Vacuum Tubes
  • The Kwiksol Solar Vacuum Tubes consist of two glass tubes manufactured from borosilicate glass.
  • The outer glass tube is transparent allowing light rays to pass through it with minimum reflection.
  • The inner glass tube is coated with a solar special selective coating (Al-N/A1), which forms a vacuum and is key to the efficiency of the vacuum tubes.
  • To maintain the vacuum between the two vacuum tubes, a barium getter is used.  The barium layer also provides a clear visual indication of the vacuum status.  The silver coating will turn white if the vacuum is ever lost.
  • Anodized Aluminium frame and manifold.
  • Working pressure up to 600kPa.

Solar Water Heating:  Direct

System For Frost And Frost – Free Locations (Non Coastal And Coastal Only VP to 200Lt)
  • The Kwikot Kwiksol Solar Water Heater Direct System complies with SANS 1307, is SABS 400kPa approved and can be used as a close coupled system or split system.
  • The inner cylinder is manufactured from 2mm steel and thermo fused porcelain enamelled for cylinder longevity and hygiene.
  • Polyurethane insulation between the inner cylinder and outer casement reduces energy and heat loss.
  • 2 x aluminium sacrificial anodes are fitted for corrosion protection.
  • The solar water heater is lPX4 rated and designed for domestic hot water application in conjunction with an array of solar vacuum tubes.
  • The two extra water connections required for connecting the manifold above the solar vacuum tubes, and the booster element, ensures that the solar water heater can be used as a conventional electric water heater and as a solar water heater.
  • The solar water heater thermostat will automatically switch on when the incoming hot water from the manifold above the solar vacuum tubes, has not reached the set temperature setting on the thermostat.  This will occur on cloudy days and at night when the water temperature drops in the solar water heater or when hot water is drawn off and cold water enters the solar water heater.
Solar Vacuum Tubes
  • The Kwiksol Solar Vacuum Tubes have been approved to use in frost and frost-free areas.
  • The solar vacuum tubes consist of two glass tubes manufactured from borosilicate glass.
  • The outer glass tube is transparent allowing light rays to pass through it with minimum reflection.
  • The inner glass tube is coated with a solar special selective coating (Al-N/A1), which provides excellent solar radiation absorption.
  • The top of the two vacuum tubes are fused together and the air is extracted, which forms a vacuum and is key to the efficiency of the vacuum tubes.
  • To maintain the vacuum between the two vacuum tubes, a barium getter is used.  The barium layer also provides a clear visual indication of the vacuum status.  The silver coating will turn white if the vacuum is ever lost.
  • Anodized Aluminium frame and manifold.
  • Working pressure up to 600kPa.

Solar Water Heating:  Indirect

System For Frost Locations (Non Coastal)
  • The Kwikot Kwiksol Solar Water Heater Indirect System complies with SANS 1307, is SABS 400kPa approved and can be used as a close coupled system or split system.
  • The inner cylinder is manufactured from 2mm steel and thermo fused porcelain enamelled for cylinder longevity and hygiene.
  • Polyurethane insulation between the heat exchanger and outer casement reduces energy and heat loss.
  • 2x aluminium sacrificial anodes are fitted for corrosion protection.
  • The solar water heater is designed for domestic hot water application in conjunction with one or more solar collector panels or solar vacuum tubes.
  • The two extra fluid connections required for connecting solar collector panels or solar vacuum tubes, and the booster element ensures that the solar water heater can be used as a conventional electric water heater and as a solar water heater.
  • The solar water heater thermostat will automatically switch on when the incoming hot propylene glycol fluid from the solar collector panels or from the manifold above the solar vacuum tubes has not reached the set temperature setting on the thermostat.  This will occur on cloudy days and at night when the water temperature drops in the solar water heater or when hot water is drawn off and cold water enters the solar water heater.
Solar Collecter Panel
  • Manufactured with an Aluminium frame, 4mm toughened prismatic, non-reflective anti-nail tempered glass.
  • Durable copper waterway tubes.
  • Rubber seals ensure durability and reliability in extreme climatic conditions.
  • Semi-selective black chrome surface on copper substrate offers maximum absorption efficiency.
  • Working pressure up to 400kPa.
  • Total & useful energy rating 4.19kWh/m².
Solar Vacuum Tubes Features
  • The Kwiksol Solar Vacuum Tubes consist of two glass tubes manufactured from borosilicate glass.
  • The outer glass tube is transparent allowing light rays to pass through it with minimum reflection.
  • The inner glass tube is coated with a solar special selective coating (Al-N/A1), which provides excellent solar radiation absorption.
  • The top of the two vacuum tubes are fused together and the air is extracted, which forms a cacuum and is key to the efficiency of the vacuum tubes.
  • To maintain the vacuum between the two vacuum tubes, a barium getter is used.  The barium layer also provides a clear visual indication of the vacuum status.  The silver coating will turn white if the vacuum is ever lost.
  • Anodized Aluminium frame and manifold.
  • Working pressure up to 600kPa.

 

Closed Coupled – Direct System
Solar Vacuum Tubes
Tube Dimension (mm)Assembled Dimensions 12 Tubes (mm)Absorption Area (m2)Mass Empty (kg)
1800 (l) x 58 (diameter)1700 (l) x 1050 (w) x 1070 (h)1.218
Solar Water  Heating:  Direct
System for Frost-Free Locations (Coastal)
Capacity (Litres)Element Rating (kw)Operating Pressure (kPa)Mass Empty (kg)Water Connections (BSP Male)Solar Connections (BSP Male)
1502Up to 40042¾¾
2002Up to 40052¾¾
2502Up to 40063¾¾
Product CodeCapacity (Litres)Dimension A (mm)Dimension B (mm)
SOL – 150 – DIR1501070594
SOL – 200 – DIR2001360594
SOL – 250 – DIR2501650594
Solar Water Heating: Direct
System For Frost and Frost Free Locations (Non Coastal and Coastal Only VP to 200Lt)
Capacity (Litres)Element Rating (kW)Operating Pressure (kPa)Mass Empty (kg)Water Connections (BSP) Male)Solar Connections (BSP Male)
1002Up to 40038¾¾
1502Up to 40042¾¾
2002Up to 40052¾¾
Product CodeCapacity (Litres)Dimension A (mm)Dimension B (mm)
SOL-100-DIR100800594
SOL-150-DIR1501070594
SOL-200-DIR2001360594
Solar Water Heating: Indirect
System for Frost Locations (Non Coastal)
Capacity (Litres)Element Rating (Kw)Operating Pressure (kPa)Mass Empty (kg)Water Connections (BSP Male)Solar Connections (BSP Male)
1502Up to 40048¾¾
2002Up to 40062¾¾
2502Up to 40081¾¾
3002Up to 40098¾¾
Product CodeCapacity (Litres)Dimension A (mm)Dimension B (mm)
SOL-150-IND1501070594
SOL-200-IND2001360594
SOL-250-IND2501650594
SOL-300-IND3001910594