idea log

Peppers ghost clock (top flat or pyramid?)
Infinity mirror
Lamp where the with two lights with thin paper as the shades where the center piece is suspended be a piece of walnut that is held up on both sides by other walnut pices that are in a maple stand
Book shelf where the amount of overhang on the shelf is based off of the size of the book that is supposed to go in that spot
Ceiling light that points upwards to a convex mirror that reflects the light and is suspended by wires or pieces of wood
3-5 leg lamp
Inside wood different than outer
Outside pieces hold the shade and the bulb is on the middle piece
Pieces holding it up are thin and linked together with a third? wood
Base is a mix of the main two (all three?) woods
Light color modification
Color Temperature Orange (CTO)
Color Temperature Blue (CTB)
HVAC
HVhACk: more sustainable HVAC, uses windows and natural air flow
Window Controllers:
Sensors: BLE devices w/ temp, pressure, humidity sensors
Window Controller
Features
Automatic opening and closing of the window
IoT/Bluetooth connectivity
Additional
Stand for fan
Blind opener/closer (use the same motor?)

Components:
Motor
Microcontroller
Humidity
Plug (or battery)
Curtains
Purpose: regulate the temperature between areas/open up flow
Secondary:

Collaboration:
($100): open API curtain opener/closer
Competition
($240-300): new system
($350): retrofit
($???): retrofit, entire home jawn
($190-260): new system
Engineering
Units
Quantity
CFM: cubic feet per minute, flow rate
Energy
Watt-hour (Wh): a measure of electrical energy equivalent to a power consumption of one watt for one hour
British Thermal Units (BTU): amount of energy necessary to raise the temperature of one amount of water from 60F to 61F
MBH: thousands BTU’s per hour
Metrics
Efficiency:
Coefficient of Performance (COP): ratio of thermal output (heating or cooling) to energy input
Energy Modeling
Yearly weather profile
Operating schedules
Building envelope conditions
% savings=1-SEERcurrentSEERcurrent*100% *only applies if rated cooling output and operating schedules remain the same after upgrade, otherwise energy consumption in kWh must be calculated separately for existing and projected running conditions
Air Conditioning
Types of Air Conditioners
Types
Coolant
R-410a: New standard, more efficient, no ozone damage, operates at higher pressures, requiring use of tougher and more durable parts, increasing life of system.
R-22 (freon): Old standard, now illegal in any system manufactured after 2010, no longer imported or manufactured after 2020. Less energy efficient (absorbing and releasing heat), contributes to depletion of ozone, rising prices.

Metrics
Efficiency: ratio of cooling output (BTU) to heating input (watt-hours) (unit = BTU/Wh)
Energy Efficiency Ratio (EER): fixed set of operating conditions (Tindoor = 80F, Toutdoor = 95F, relative humidity = 50%)
Seasonal Energy Efficiency Ratio (SEER): averages performance across a range of outdoor temperatures typical of the cooling season.

Degradation
Estimated Capacity: BTU/Hr
US DOE: 3% degradation for unmaintained, 1% for completely maintained systems
Florida Test: median 5.2%
degradation=-0.0454+0.00269(Age)+0.030(Tons)-0.00127(SEER)
Degradation = -0.0454
Heating
Metrics
Efficiency:
Heating Seasonal Performance Factor (HSPF): analogous to SEER, applies for heat pumps in heating mode only
SEER: describes heat pumps during cooling season
Annual Fuel Utilization Efficiency (AFUE): used for combustion-based appliances (boilers, furnaces), ratio of effective heating output to total energy contained in the fuel consumed
Unimotor
IMG_0095 copy 2.jpg
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