data-analysis

Heat pump water heater

Kazu Nozue / 2021-01-07

library(tidyverse) library(lubridate) library(scales) Buring gas produce CO2. Reducing gas usage is critical to reduce CO2 production from our house. Here is the history of our gas usage of my house since 2012 November. # reading data gasdata <- …

native-plant

Native plant garden project v2.1

Kazu Nozue / 2019-12-30

Toward this rainy season I started upgrading my native plant gardens. Main goals of this project (v2) are […] Fig.1 Survived lawn. […] Fig. 2. Replacing lawn to native plants. […] In the first project I expected spontanious disappearance of lawns from fronyard by no watering …

EV

Charging an electric vehicle at home: 240V outlet installation in my garage

Kazu Nozue / 2019-12-27

Fig 1. Two 240V outlet installed in my garage today! The world of charging an electric vehicle is totally different from gas-fueling an gasoline-powered vehicle. Similar to gas stations there are growing number of electric charger stations, such as Tesla Superchargers and EVgo. The biggest …

decarbonization

Decarbonization project: switching a gas-powered vehicle into an electric vehicle (EV)

Kazu Nozue / 2019-12-05

The U. S. officially notified withdrawal from the Paris Agreement on Nov 4, 2019. I am so sad to hear the news that movement toward decarbonization is essential to prevent from global warming. Please listen a high-school student (Greta Thunberg) speech on decarbonization at United Nations’ Climate …

decarbonization

脱炭素化プロジェクト: ガソリン車から電気自動車へ

Kazu Nozue / 2019-12-03

2015年のパリ議定書や 1人の高校生環境活動家グレタ・トゥーンベリさんの衝撃的なスピーチを引き合いに出すまでもなく、地球温暖化を防ぐには化石燃料をはじめとした炭素の排出を減らす(decarbonization)のみならず、空気中の二酸化炭素を減少させる（carbon capture; carbon sequestration) 行動を我々は直ぐにでも取らなければなりません。ささやかながらではありますが、我が家はcarbon sequestrationを目的とするだけでなく、貴重な水資源の無駄遣いを止めるためにnative plantを芝生の替わりに植えるプロジェクトを行ってきました。米国で …