Abstract: A process for using photocatalytic load reduction to extend reactive media filtration life is disclosed for an air purification system. The system consists of three methods of cleaning the air including a UV light, a photocatalyst, and an air purifier. Air first passes through a portion with the UV light and photocatalyst, and then through the purifier. Passing the air first through the UV light and photo catalyst before the purifier reduces the load on the purifier and thus allowing the purifier to operate and clean the air for an extended period of time as compared to the purifier alone.

Abstract: A honeycomb device is provided for heat exchange between first and second fluids at distinguishable temperatures. The device includes first and second fluid intakes, first and second fluid exhausts, first and second capillary arrays, and first, second, third and fourth channels. The first and second fluid intakes respectively receive the first and second fluids. The first and second fluid exhausts respectively discharge the first and second fluids. Each first and second capillary in the arrays are disposed in checkerboard cross-section adjacent arrangement, and preferably have a rhombus cross-section. The first transition channel connects the first fluid intake to the first capillary array. The second transition channel connects the first capillary array to the first fluid exhaust. The third transition channel connects the second fluid intake to the second capillary array. The fourth transition channel connects the second capillary array to the second fluid exhaust.

Abstract: A flow cell and method for photometric transmission measurements are disclosed in which a folded optical path provides for co-located, collinear fiber optic read and illumination cables that can be bundled together. Light passes through a fluid sample, is reflected off a pair of right-angle turning mirrors and returns through the fluid for a second pass. A center divider separates fluid passages on the first pass of the light through the fluid and the second pass of the light through the fluid to block any undesired backscattered light from reaching a detector.

Abstract: A honeycomb device is provided for heat exchange between first and second fluids at distinguishable temperatures. The device includes first and second fluid intakes, first and second fluid exhausts, first and second capillary arrays, and first, second, third and fourth channels. The first and second fluid intakes respectively receive the first and second fluids. The first and second fluid exhausts respectively discharge the first and second fluids. Each first and second capillary in the arrays are disposed in checkerboard cross-section adjacent arrangement, and preferably have a rhombus cross-section. The first transition channel connects the first fluid intake to the first capillary array. The second transition channel connects the first capillary array to the first fluid exhaust. The third transition channel connects the second fluid intake to the second capillary array. The fourth transition channel connects the second capillary array to the second fluid exhaust.