1. A fuel cell assembly comprising:
an enclosure for mounting a fuel cell stack therein, the enclosure comprising an air flow path extending between an air inlet and an air outlet; and
a fuel cell stack having a plurality of cathode air coolant paths extending between a first face and an opposing second face;
wherein the fuel cell stack is mounted within the enclosure to provide a first tapering air volume between the first face of the stack and a first side wall of the enclosure and a second tapering air volume between the second face of the stack and a second opposing side wall of the enclosure.
2. The fuel cell assembly of claim 1 wherein diagonally opposing edges of the stack are sealed against the respective first and second opposing side walls of the enclosure.
3. The fuel cell assembly of claim 1 wherein the enclosure comprises an inlet air filter at a first end of the air flow path and an air exhaust at a second opposing end.
4. The fuel cell assembly of claim 3 comprising a reducing tapered section extending from the inlet air filter to the first tapered air volume.
5. The fuel cell assembly of claim 3 comprising a increasing tapered section extending from the second tapered air volume to the air exhaust.
6. The fuel cell assembly of claim 3 comprising a fan provided at the air exhaust for drawing air through the air flow path.
7. The fuel cell assembly of claim 5 wherein the enclosure has a substantially cuboid external shape.
8. The fuel cell assembly of claim 1 wherein the fuel cell stack is mounted at an angle of between 5 and 45 degrees to a longitudinal axis of the enclosure.
9. The fuel cell assembly of claim 1 wherein the fuel cell stack comprises a staggered array of planar fuel cells between opposing end plates laterally offset from one another.
10. The fuel cell assembly of claim 1 wherein the fuel cell stack has a cross-sectional shape in the form of a parallelogram.
11. The fuel cell assembly of claim 1 comprising an air recirculation duct extending between the air outlet and air inlet, the assembly comprising a retractable baffle adjacent the air outlet, the baffle being operable between a closed position and an open position in which a proportion of air passing through the second tapering air volume is redirected back towards the air inlet via the recirculation duct.
12. The fuel cell assembly of claim 1 wherein an air deflector assembly is provided between the air inlet and first face of the fuel cell stack.
13. (canceled)
14. The fuel cell assembly of claim 12 wherein the air deflector assembly comprises a plurality of vanes arranged as one or more rotatable air deflector assemblies configured to rotate in response to air flowing through the air inlet to increase turbulence in the first tapering air volume.
15. A modular fuel cell assembly comprising a plurality of fuel cell assemblies according to claim 1 arranged in a regular array, the array being optionally a rectangular array.
16. The fuel cell assembly of claim 4 comprising a increasing tapered section extending from the second tapered air volume to the air exhaust.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A mobile system, comprising:
a telephone having one or more sensors to capture fitness data or vital sign data, the telephone having a wireless transceiver coupled to the processor to communicate fitness or vital sign data over a personal area network; and
a processor coupled to the personal area network to process the fitness or vital sign data.
2. The system of claim 1, comprising a body wearable appliance in communication with the telephone, wherein the body wearable appliance includes a pendant or a watch.
3. The system of claim 1, wherein one sensor comprises one of: a differential amplifier, an accelerometer, an EMG detector, EEG detector, an EKG detector, an ECG detector, an electromagnetic detector, an ultrasonic detector, an optical detector.
4. The system of claim 1, wherein the telephone comprises a screen with a fingerprint sensor.
5. The system of claim 1, wherein the processor detects patient or wearer movement.
6. The system of claim 1, comprising an in-door positioning system coupled to one or more network appliances to provide location information.
7. The system of claim 1, comprising a call center coupled to the telephone to provide a human response.
8. The system of claim 1, comprising a web server coupled to the network to provide information to an authorized remote user.
9. The system of claim 2, wherein the telephone or the appliance determines changes in fitness.
10. The system of claim 2, wherein the telephone or the appliance determines pressure, glucose, EEG, ECG, calorie, patient or wearer activity.
11. The system of claim 1, comprising a cellular transceiver coupled to the body wearable appliance.
12. The system of claim 1, comprising a body impedance (BI) sensor to determine one of: total body water, compartmentalization of body fluids, cardiac monitoring, blood flow, skinfold thickness, dehydration, blood loss, wound monitoring, ulcer detection, deep vein thrombosis, hypovolemia, hemorrhage, blood loss, heart attack, stroke attack.
13. The system of claim 1, wherein the transceiver continuously communicates vital signs throughout a hospital to make vital signs accessible to authorized hospital employees.
14. The system of claim 1, wherein the telephone or appliance transmits and receives voice from the person over the network to one of: a doctor, a nurse, a medical assistant, a caregiver, an emergency response unit, a family member.
15. The system of claim 1, wherein the telephone analyzes user motions.
16. The system of claim 1, wherein the telephone captures electrocardiogram (EKG) data.
17. The system of claim 1, comprising a telephone housing having one or more bioelectric contacts coupleable to the patient or wearer, the housing selected from one of: a patch, a wristwatch, a band, a wristband, a chest band, a leg band, a sock, a glove, a foot pad, a head-band, an ear-clip, an ear phone, a shower-cap, an armband, an ear-ring, eye-glasses, sun-glasses, a belt, a sock, a shirt, a garment, a jewelry, a bed spread, a pillow cover, a pillow, a mattress, a blanket, each having one or more sensors in communication with the wireless network.
18. A mobile telephone, comprising:
a processor;
one or more sensors coupled to the processor to capture fitness data or vital sign data;
a cellular transceiver coupled to the processor;
a wireless transceiver to communicate the data over a personal area network; and
a fingerprint sensor coupled to the processor.
19. A system, comprising:
a processor;
one or more sensors coupled to the processor to capture fitness data or vital sign data;
a cellular transceiver coupled to the processor;
a wireless transceiver to communicate the data over a personal area network; and
a user interaction surface including a display and fingerprint sensor each coupled to the processor.
20. The system of claim 19, comprising a smart watch coupled to the personal area network, the smart watch including one or more sensors to capture fitness data or vital sign data.