An energy recovery ventilator cabinet containing a plurality of enthalpy wheels. The enthalpy wheels are substantially perpendicular to a stream of forced air, allowing the air to pass through the wheels. The enthalpy wheels are also disposed such that portions overlap, allowing multiple enthalpy wheels to be disposed in a smaller space than if the enthalpy wheels were placed side by side. This arrangement has led to energy recovery effectiveness similar to that obtained by a larger, single enthalpy wheel, but has the advantage of using less space.

A rotary heat exchanger device is disclosed. In an embodiment the rotary heat exchanger includes a rotary heat exchanger having a rotary heat exchanger axis of rotation, a drive motor having a stator and a rotor including a rotor axis of rotation and a housing into which the rotary heat exchanger is installed and in which the latter rotates, wherein the rotor axis of rotation and the heat exchanger axis of rotation extend coaxially and the rotor is rigidly connected to the rotary heat exchanger.

A support structure for a rotary regenerative heat exchanger includes an upper section, a lower section, and a plurality of support members. The upper section includes an upper ring having a first exterior surface, an upper hub and at least three upper spokes each extending between and secured at respective ends thereof to the upper ring and the upper hub. Each of the plurality of support members are fixedly secured, directly or indirectly, to the upper ring and the lower section. An annular space is between the upper ring and the lower ring, which is configured to receive compartments of a rotor assembly. The upper hub, the upper spokes and the support members cooperate to provide rigidity to the support structure by cooperating to support and transmit the weight of the upper spokes, the upper ring and the upper hub to the lower section.

A modular kitchen-connected indoor stationary solar cooking device (102) is disclosed. The solar cooking device (102) includes a housing (202), a thermal battery (204) disposed in the housing (202) and adapted to store thermal energy, and a first heater (206) disposed to be in contact with the thermal battery (204). The first heater (206) is coupled to a solar array (104) and adapted to receive solar energy for charging the thermal battery (204). The solar cooking device (102) includes a second heater (208) disposed to be in contact with the thermal battery (204). The second heater (208) is coupled to a mains supply and adapted to receive electrical supply for charging the thermal battery (204). The solar cooking device (102) includes a heat control assembly (210) disposed on a cooktop (802) and adapted to accommodate a cooking vessel. The heat control assembly (210) is adapted to rotate for controlling a heat supply for cooking in the cooking vessel.

A modular kitchen-connected indoor stationary solar cooking device (102) is disclosed. The solar cooking device (102) includes a housing (202), a thermal battery (204) disposed in the housing (202) and adapted to store thermal energy, and a first heater (206) disposed to be in contact with the thermal battery (204). The first heater (206) is coupled to a solar array (104) and adapted to receive solar energy for charging the thermal battery (204). The solar cooking device (102) includes a second heater (208) disposed to be in contact with the thermal battery (204). The second heater (208) is coupled to a mains supply and adapted to receive electrical supply for charging the thermal battery (204). The solar cooking device (102) includes a heat control assembly (210) disposed on a cooktop (802) and adapted to accommodate a cooking vessel. The heat control assembly (210) is adapted to rotate for controlling a heat supply for cooking in the cooking vessel.

An insulation retaining assembly for a high temperature rotary pre-heater having a cold-end rotor and a hot-end rotor includes a plurality of elongate retainer elements. Each of the retainer elements has a root end adapted to be held in fixed relationship to the cold-end rotor and a distal end proximate to the hot-end rotor. Portions of each of the plurality of retainer elements are adapted for circumferential movement.

Inventive concentrated solar power systems using solar receivers, and related devices and methods, are generally described. Low pressure solar receivers are provided that function to convert solar radiation energy to thermal energy of a working fluid, e.g., a working fluid of a power generation or thermal storage system. In some embodiments, low pressure solar receivers are provided herein that are useful in conjunction with gas turbine based power generation systems.

Inventive concentrated solar power systems using solar receivers, and related devices and methods, are generally described. Low pressure solar receivers are provided that function to convert solar radiation energy to thermal energy of a working fluid, e.g., a working fluid of a power generation or thermal storage system. In some embodiments, low pressure solar receivers are provided herein that are useful in conjunction with gas turbine based power generation systems.

Inventive concentrated solar power systems using solar receivers, and related devices and methods, are generally described. Low pressure solar receivers are provided that function to convert solar radiation energy to thermal energy of a working fluid, e.g., a working fluid of a power generation or thermal storage system. In some embodiments, low pressure solar receivers are provided herein that are useful in conjunction with gas turbine based power generation systems.

A heat transfer sheet assembly for a rotary regenerative heat exchanger has first and second heat transfer sheet elements stacked one against the other with a first repeat of a first profile on one sheet element opposing a second repeat of a second profile on the other sheet element. The sheet elements are spaced apart by a plurality of wide-gauged parallel sheet spacing features of the first profile repeat RI of the second profile repeat to form a generally close sided elongate channel for gaseous flow therethrough. The second profile of repeat includes an elongate fifth sheet spacing feature in the form of a lobe contacting undulations of the adjacent first profile of repeat.